Rob Caucci

Timing almost always dictates outcomes. If I've learned one thing about opportunity as a founder, that's it. A weird Goldilocks principle is at play: Bad timing = low floor, low ceiling opportunities Too early? You'll likely fail (i.e. run out of money) before you find PMF. Low floor. Too late? You'll fight bloody battles over scraps in a saturated market. Low ceiling. Good timing = high floor, high ceiling opportunities Try to find opportunities where the timing is "just right".

Finally watched @ericries on @lennysan 's pod and holy shit... what a breath of fresh air! Just pre-ordered Incorruptible Lean Startup changed the game (and my life) 15 yrs ago, and in our increasingly dark and corrupt world, I pray to God this ray of sunshine spreads, too

@cherylyeoh @GetTinyHealth this is incredible!! Love seeing this "out in the wild"

21 million people just witnessed a @GetTinyHealth vaginal microbiome score go viral on X. I'll be honest, I didn't have that on my bingo card. But it opens up a conversation that actually matters, and I have my own data to add to it. My TH VJJ test came back 100/100 pre-birth. L. 𝘤𝘳𝘪𝘴𝘱𝘢𝘵𝘶𝘴 dominant, top 1%. I felt incredible knowing my vaginal microbiome was in such strong shape heading into my 3rd birth. Then postpartum hit, and my score dropped to 24. Having a baby changes everything. But inside my vaginal microbiome, the one variable that mattered most was my estrogen. 𝗧𝗵𝗶𝘀 𝗶𝘀 𝗼𝗻𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝗼𝘃𝗲𝗿𝗹𝗼𝗼𝗸𝗲𝗱 𝗱𝘆𝗻𝗮𝗺𝗶𝗰𝘀 𝗶𝗻 𝘄𝗼𝗺𝗲𝗻'𝘀 𝗵𝗲𝗮𝗹𝘁𝗵. Estrogen is the primary fuel for 𝘓𝘢𝘤𝘵𝘰𝘣𝘢𝘤𝘪𝘭𝘭𝘶𝘴. It thickens the vaginal epithelium and creates the glycogen that L. 𝘤𝘳𝘪𝘴𝘱𝘢𝘵𝘶𝘴 feeds on. When estrogen drops during postpartum, perimenopause, or menopause, the entire ecosystem can shift dramatically. A microbiome that looked perfect six months ago can look completely different today. Most women never connect the dots, because the data to do so never existed. In our Tiny Health data, we see this same arc play out consistently across women's lives: higher 𝘓𝘢𝘤𝘵𝘰𝘣𝘢𝘤𝘪𝘭𝘭𝘶𝘴 pre-pregnancy (though not all women start there), significant “dysbiosis” in the postpartum window, and another shift during perimenopause. 𝗜 𝗽𝘂𝘁 "𝗱𝘆𝘀𝗯𝗶𝗼𝘀𝗶𝘀" 𝗶𝗻 𝗾𝘂𝗼𝘁𝗲𝘀 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗽𝗼𝘀𝘁𝗽𝗮𝗿𝘁𝘂𝗺 𝘀𝘁𝗮𝗴𝗲 𝗱𝗲𝗹𝗶𝗯𝗲𝗿𝗮𝘁𝗲𝗹𝘆. We actually think that shift may be a natural child-spacing mechanism, one that's meant to happen until hormones normalize with menstruation or weaning. It's harder to conceive again with low or no 𝘓𝘢𝘤𝘵𝘰𝘣𝘢𝘤𝘪𝘭𝘭𝘶𝘴, and conceiving in that state is associated with a higher risk of preterm birth. So the postpartum vaginal shift may be entirely normal, and for many women, completely asymptomatic. But for women who aren't postpartum and are experiencing low 𝘓𝘢𝘤𝘵𝘰𝘣𝘢𝘤𝘪𝘭𝘭𝘶𝘴, the downstream consequences are a different story. Bacterial vaginosis (BV), recurrent UTIs, yeast infections, increased HPV persistence, and disrupted immune defenses get chalked up to "𝗷𝘂𝘀𝘁 𝗽𝗮𝗿𝘁 𝗼𝗳 𝗯𝗲𝗶𝗻𝗴 𝗮 𝘄𝗼𝗺𝗮𝗻." These imbalances are not inevitable. And when you can measure them, many are avoidable. A 100 score is worth celebrating, but a single snapshot is just a moment. The pattern over time is where the data that actually changes outcomes lives. That's the standard of care we're building toward at Tiny Health. 🌱

@garrytan @justinvincent Say no more fam, this 37 y/o solo founder is happy to be one of the uncs (did I do that right? ;) to the prodigious youth in the batch

@justinvincent We fund solos and age ain’t nothing but a number

Today is the deadline to apply for YC Summer 2026. If you're still hesitating: the companies that change the world don't wait until they're 100% ready. Applying is sometimes literally the first step.

@chrisstlmo @realEstateTrent The loudest "holy shit!" was prob when I deployed software I built to real users in production as a non-technical guy working in "tech" for 15+ years @Replit 's responsible for that particular experience, but there are now several ways you can do the same

@rcaucci @realEstateTrent Like what if I may?

We hired a 27-year-old associate a few months ago, and he uses Claude Cowork all day. I don't have the words to describe what is happening to our productivity. Things that would have taken months are now getting done in hours - it's changing the entire way we run our business!

This is the the quote I've been citing a lot recently.

@MannyBernabe It's a bday celebration!! LFG!! 🥳🎂🤖🚀 x.com/rcaucci/status…

🎂 Replit turns 10 this weekend, and we're giving every Replit user free Agent for 24 hours on Saturday.🤯 Clear your Saturday. And tune in live tomorrow, Friday at 9 AM PT, when we go live to walk you through all the details. We're also launching a one-day Buildathon on Saturday with over $100 K+ in prizes. We want to see how far you can get with Agent in 24 hours. Also on tomorrow's show: @samuel_spitz comes on for the Slides launch. @nickco and @kodylow announce a brand new Enterprise livestream series and community. So much going on in the Replit world. See you tomorrow. RSVP below 👇 luma.com/c89irv1j

@Replit Hell yes! LFG!! 🚀 x.com/rcaucci/status…

Replit Agent is free tomorrow for everyone starting at 5am PST Show use what you can build in 24 hours And Replit is turning10! A trip down the memory lane on what got us here

Grateful to @amasad and Team for building their thing, which makes it possible to build our thing Thanks for handing this non-technical founder a magic wand!🪄 S/O to @MannyBernabe , @raymmar , and crew for building + organizing the community 🙌

P.S. this weekend I'm pushing things as far as possible. I'm participating in @Replit's Buildathon for their 10th anniversary to transform Alto Studios into a full-stack software platform for modern, digitally-native storytellers. Couldn't have found a better excuse to accelerate the dev of our roadmap. Happy bday and cheers to the next decade! 🥳

Everyone's suddenly an expert on "taste" and "slop." … but I haven’t seen anyone define what actually separates them. Here’s a thread on the four key variables that do 🧵