Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co Our goal is to create the following: - A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with. - Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch? - Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies. - Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers? - Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides. Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business. In order to join, you need to be cosigned. Or you can apply directly. David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do. No one has really touched LinkedIn in 20 years. Excited to take a swing. cosign.co

one of our own just raised $75m to build one of the largest rare earth metallization plants in the western world so proud of you @hoomanrenezhad & the @solcoatech team🫶

AI is getting cheaper more quickly than any other transformative tech in history. At a given level of performance, cost has fallen ~47%/quarter since 2023. That’s 4× faster than DNA sequencing, 6× faster than compute, 18× faster than lithium batteries, and (up to 1973) 54× faster than electricity.

CNBC’s @Lebeaucarnews and $AUR CEO Chris Urmson hit the road in an autonomous big rig: cnb.cx/46FVcrp

BREAKING: Pod 6 is live. The sixth generation of our intelligent sleep system, redesigned for every kind of bed. ✅ The new Hub is small enough to fit under your bed frame ✅ More powerful than ever ✅ With 9x more sensors for enhanced accuracy ✅ In new Solo sizes, at our lowest starting price yet This is our most significant hardware launch to date, and our most accessible. Available now at eightsleep.com

Social facts that will never be explained directly. Useful for those on the spectrum: 1. Every human interaction is characterized by a hierarchy. It'll be between you and the other or (if you're equal to the other) between you both and a third party, who may not be present.

omfg brutally modelmogged

$META is starting to put a subscription layer across its entire ecosystem with Meta One now live globally across Instagram, WhatsApp and Facebook. Plans start at $7.99 for consumers and reach $499 for businesses with more AI usage and premium tools bundled in.

the best way to motivate others is to challenge them lovingly "i see you and know what you're capable of, and in order to reach your max potential, this is what i think you need to work on" holding someone accountable and keeping the bar high, while also being empathetic to where they are right now

A 30-second cold blast at the end of your shower cuts sick days by 29 percent. A 2016 trial of 3,018 adults in the Netherlands is the largest cold-shower study ever done. Geert Buijze at the Academic Medical Centre in Amsterdam split participants into four groups: 30, 60, or 90 seconds of cold water at the end of a shower, or no cold water. They did this for 30 days straight. All three cold groups had 29 percent fewer sick days. The length did not matter. Thirty seconds worked as well as ninety. The mechanism is thought to involve the immune system. Brief cold exposure triggers a spike in white blood cell count and an increase in metabolic rate, both of which are part of the body's response to what it perceives as a physical threat. Over time, repeated cold exposure appears to train the immune system to respond faster and more efficiently to infections. The study also found that 91 percent of participants in the cold-water group said they would continue the practice after the trial ended, even though most of them described the experience as unpleasant. They reported feeling more energetic, and the energy boost was the reason they kept going. Thirty seconds. At the end of the shower you were already taking. The water does not have to be ice cold. It has to be cold enough to make you gasp, and you have to stay in it for a count of thirty. pubmed.ncbi.nlm.nih.gov/2763…

Mayor Daniel Lurie endorsed Manny Yekutiel for District 8 supervisor Friday, less than three months after the restaurateur was accused of sexual assault, an allegation he has denied. 📝: @FitzTheReporter sfstandard.com/2026/09/11/ye…