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Quick facts

• Difficulty: HARD
• Problem: Partition Array Into Two Arrays to Minimize Sum Difference
• Topics: Array, Two Pointers, Binary Search, Dynamic Programming, Bit Manipulation, Sorting, Ordered Set, Bitmask

Problem gist

The input contains 2 * n integers. Every number must go into one of two arrays, and each array must contain exactly n numbers. The goal is to make the absolute difference between the two array sums as small as possible.

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Two Ways to Have a Good Life

A screaming baby at two in the morning can make a parent miserable without making parenthood feel meaningless. That tension is the “parenting paradox”: compared with adults without children, parents often report more stress, depression and low moods in daily life, yet they can also describe their lives as more satisfying overall.

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The Pragmatic Engineer surfaced this piece in its July 23, 2026 edition, The Pulse: Quitting Spotify Podcasts over reliability. Gergely Orosz describes moving his podcast’s video distribution off Spotify after four serious failures in roughly two months. Spotify will still receive the audio through an external RSS feed, but YouTube becomes the destination for video.

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The Gates Foundation met with Epstein about 30 times despite staff concerns, an external review says (r/news)

• Snakestream: Gates managed to launder his reputation so well after all the shitty things he did in the 90s and then still wanted to go back for more with Epstein. SMH some people don’t know when to quit when they’re ahead
• TintedApostle: 30 times! 1 or 2 times I say well bad judgement or pedo. 30 times? Complicit.
• CoffeeHead112: The issue is that epstein was in control of a massive amount of funding and grants. He amassed tons of power and money. Its not surprising that one of the biggest charities was meeting with him on the regular. It would be stupid not to. With that said he very easily could’ve been an epstein client. Just note, a lot of innocent people will be in the epstein files from universities, researchers, and charities because he was a gate keeper of a lot of their funding. I will hold off with my pitchfork until I get something more about Gates.

US war in Iran has cost \$37.5 billion so far, Pentagon says (r/news)

• Winter-Anywhere-3963: Double or triple that for the actual number
• DevinB333: But heaven forbid we get universal healthcare
• Ok-Association-3415: They blew through most of the weapons stock pile and those ain’t cheap so it’s likely far higher than that. We are talking shortage now and the budget was almost 1 trillion? The real number is likely 200 billion.

People who are 40+, what is a “silent killer” habit that people in their 20s think is completely harmless, but is secretly setting them up to get absolutely destroyed in a decade? (r/AskReddit)

• Frodo_gabbins: I’m not 40 yet but the answer is sleeping too little and not eating enough fiber.
• independentfinallly: Lifting with your back instead of using your legs
• smurfopolis: Not wearing earplugs at concerts. I was a music photographer in my 20s and now there’s always a constant ringing in my ears and I have a hard time hearing people a lot of the time

What businesses do you think are quietly declining because younger generations aren’t interested in them? (r/AskReddit)

• No-Owl-6246: Historical societies. My parents belong to one that does an annual conference every year. They don’t bring in anyone young (everyone was very excited when a guy in his forties joined and went) and the memberships are dying off. My mom said that they had seven members deaths since last years conference.
• The_Real_Lasagna: Harley Davidson
• Logical-Slice-3976: Small repair stores like vacuum, clocks, and shoes..

What is an anime you consider an absolute 10/10 masterclass from start to finish? (r/AskReddit)

• Playful-Biscotti975: Forgot to mention, but if you want a more calm and beautiful slice of life esque anime Mushishi is pure bliss to watch. The animation and narration are unlike other animes and the anthology style makes each episode very unique.
• ROSIESARCH: Cowboy Bebop or Samurai Champloo :)
• IndividualYazmin: Full metal alchemist brotherhood

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How’s this possible? CTO at OpenAI (Blind)

• slvi: I worked with him at XAI. He was insanely good. Outcompeted everyone
• Sportify (Salesforce): Sam Altman saw that he studied at Chaitanya Bharathi institute of technology and realized that he had found OpenAI’s next leader
• ex-aviato (ex-Snowflake): Doesn’t matter how. He’s a CTO and you’re not. Do you go around asking all the worlds billionaires how they got rich? Some people are talented and some are not, and then there’s network which is one of the biggest pull. If you aren’t in the right circles it doesn’t matter if you built Google search or a spaceship.

Laid off in my 40s, and the market feels completely hostile to senior talent. (Blind)

• Tweakday (Workday): old ahh man it’s prolly ur attitude holding u back 😂 wouldn’t wanna work w u unc
• 0"9 (EATON): “It feels like the market has silently written off anyone with a long resume in favor of cheaper mid-level talent and H1Bs who won’t question ridiculous work hours.” yea for sure you are not going to go anywhere with this loser coping/blaming attitude rofl.
• Balimahn (Meta): I think you should target companies that value senior engineers like Databricks, Cloudflare, and Stripe. I know AI labs employ seniors too so no harm in looking at them. I can share Stripe and Anthropic material cause that I’ve been able to gather, and anything else I find. Also have you considered looking outside big tech? Work on something, startup? Why are you still so hell bent on playing a game we all want out of?

Leaving Apple for Meta was the single worst career decision I’ve ever made. (Blind)

• Sstayn (Google): Meta has to be a real fucking shit show for you to romanticize Apple after all I’ve heard from my friends. But hey, having Meta and Apple on your resume should give you a boost 90% of this market would kill for. I have Google prep notes covering theprocess if you want them.
• charliewho (OpenAI): I know exactly how you felt. Left Apple, got burnt, bad job market experience but landed eventually. Good luck mate
• gabbbbb (Apple): Just reapply. As long as you didn’t steal IP as you left you’re good to come back, and it sounds like you’re in the AIML space where there is hiring

“He’s an analog man in a digital AI world”: Nolan’s ‘The Odyssey’ made back its \$250M budget in 3 days without industrywide AI cost cutting (r/technology)

• A_pirates_life4me: I think he’s just a good director in a sea of mediocre directors
• NoMark3945: Turns out audiences care more about spectacle they can feel than whether the production pipeline was cheap. Cost cutting is invisible; ambition is not.
• Automatic-Wind-6501: “industrywide AI cost cutting” is just C-suite translation for “we fired the VFX artists and now our 200 million dollar movie looks like a blurry PS3 cutscene.” turns out people actually want to pay for quality.

Five tech giants are hiding \$1.65tn in AI debt, using the trick that toppled Enron (r/technology)

• agha0013: some Enron magic, sprinkled with some of the magic that led to the 2008 housing crash, and zero lessons learned as financial institutions try to repackage and sell the debt all over the world.
• The_Homie_Tito: So when does the bubble burst?
• pepe_acct: Yeah this article is trash. The author ignored some important caveats: 1. Future commitments are not considered debt because they don’t have interest. 2. Many commitments are multi year. It’s paying 1.6 trillion across years not immediately. 3. In many cases, when the business prospects doesn’t make sense anymore, many of them can just pause the deal or just exit. There’s generally exit options in the deals and these large constructions get delayed all the time. 4. Most of these future commitments has nothing to do with Enron. This is peak title rage baiting

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When sparse computation makes communication dense

The official NVIDIA Technical Blog published this post on July 21, 2026. It uses a DeepSeek-V3 671B pre-training run to make a broader systems argument: mixture-of-experts models save arithmetic by activating only part of the network for each token, but that efficiency moves the limiting resource toward communication.

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A Familiar Feeling with an Unsettled Explanation

Tickling is instantly recognizable but scientifically slippery. It blends touch, laughter, anticipation, emotion and social context into a sensation that can feel playful in one moment and unbearable in another. In “The Surprising Science of Tickling,” neuroscientist Konstantina Kilteni argues that this odd experience offers a useful way to study how the brain combines bodily signals and predicts what a touch will feel like.

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Techmeme surfaced the July 22, 2026 development in its PRIMA bionic-eye item, led by the Financial Times report US start-up wins EU approval for sight-restoring bionic eye. Science Corporation’s commercial-launch announcement and the underlying clinical study provide the technical and medical context.

The important word in “bionic eye” is not eye but interface. PRIMA does not heal damaged photoreceptors or recreate ordinary sight. It inserts a new path between a camera and the surviving neural circuitry of the retina, giving some people with advanced age-related macular degeneration enough artificial central vision to read letters, numbers, and words.

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This summary covers The Economist’s July 4th, 2026 Business article listed in the contents as The rise of vibe lawyering and published under the headline Trial and error.

Artificial intelligence is making it easier for people to enter court without hiring a lawyer. That can widen access to a system whose cost and complexity shut many people out. But early evidence suggests that chatbots are also filling courts with fabricated precedents, overconfident claims and far more paperwork. The result is not the disappearance of lawyers so much as a new division of labour between machines that make legal help cheaper and humans who verify what the machines produce.

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Charlie Kirk sign removed from Tenn. highway after veterans object (r/news)

• AdditionalBudget2142: History won’t be kind to him and that’s a good thing.
• ratchclank: He was a podcaster. He had done nothing in life to deserve a memorial. 🙄
• Successful-Medicine9: The article doesn’t say they were mad about the name, just that the highway was already named to memorialize Vietnam war vets and they changed it without asking. They’re gonna memorialize Kirk on a different road now. Hopefully the attention this garnered will cancel it altogether.

5 dead in attempt to save a struggling swimmer in an Ohio river, sheriff says (r/news)

• JimHeckdiver: One of the first things I was taught when I took an advanced swimming class, was that I was not a lifeguard, and that I’d be more likely to drown than to affect a rescue.
• FaceMcShootie: A struggling swimmer only fights against the water. A rescuer fights both.
• Kopav: I grew up in that area (Dublin), swam in HS and college and was a trained lifeguard. I wouldn’t consider swimming in that river North of the dam. There are plenty of pools, ponds, lakes, streams or even other parts of the river that are much safer for swimming.

What’s a movie cliche that happened to you in real life, even though they “never happen in real life”? (r/AskReddit)

• CoffeeExtraCream: In college I (male) lived in an apartment my sophomore year. The layout was weird and each floor had 2 apartments. The apartment across the hall from us we noticed was a bunch of girls moving in. So we joked amongst ourselves that we should go over and ask to borrow a cup of sugar to meet them. Almost immediately after we made the joke we hear a knock on our door and it was our neighbors from across the hall asking to borrow a cup of sugar.
• NotTheGreenestThumb: Inherited money from a relative none of us ever heard of before.
• Commander_Cyclops: More of a general comedy cliche, but I once slipped on a banana peel on a public sidewalk. Fell backwards and landed right on my ass, just like Curly.

What is the most disturbing or unhinged Reddit post you’ve ever read that still lives in your head rent-free? (r/AskReddit)

• glittergooch: The one where the woman was nearly about to give birth, but was so stressed out becuase her husbands mom died during child birth. His dad was basically preparing him to have to raise his baby alone because he was so sure his daughter in law would die like his wife. I think she deleted her post and never gave an update. I think about her all the time.
• UnluckyAssist9416: Famous Sub Sandwich story where 1 person decided to finish off half of a 6 foot sub at a party.
• PowerfulBrandon: The post where a guy was having dinner with his girlfriends parents for the first time, and he thought it would be a funny joke to pretend like he’d never seen a potato before. I couldn’t stop laughing the first time I read that one

What situation as a child did you only realize you were in danger as an adult? (r/AskReddit)

• Secretlyagummybear: I loved seeing snakes on tv as a little girl, and my favorite character in Kung Fu Panda was Viper, so when I learned snakes like to sometimes nest or burrow in holes, I took a cookie sheet out into the backyard and put it next to a big hole. Sure enough, the pan heated under the sun and snakes came to rest on it, where i would then puck them up and play with them. My mother put a quick end to that.
• dkrbst: Letting the dads drive me home after I baby sat. I’m sure many were drunk.
• CuntForSpades: I was 5 years old, waiting by myself for the bus to school (my bus stop was right outside my daycare lady’s house). An elderly woman walked by, but stopped when she noticed me and insisted that I help her find her dog. She kept telling me it wouldn’t take that long and that I wouldn’t miss the bus. I’m so glad that I was shy and afraid of dogs back then. I refused to go with her and she hurried away when my bus pulled up.