Andrew Tjernlund

With the Boston Marathon today, a good time to re-up one of the greatest figures in sports data: the distribution of marathon finish times (n=9,789,093). The spike at 4:00 is not a coincidence.

Can remember the pure intensity sweats on a level like this.

@BillDA Going to have to work on our GEO amazon.com/Tjernlund-V2D-…

I was quoted $10,000 to install two dehumidifiers in my crawlspace. I saved $7,500 by designing a DIY custom crawl space dehumidification system with Claude 🤑 I am not an HVAC professional. Here’s how I did it. Our story begins with the discovery that our new home needed a dehumidifier installed in the crawl space to prevent mold. The professionals told me it would cost $10k, since I’d need one unit on each end due to the size of the space, plus a second drain line installed. “Can’t we just use fans to move the humid air from one side toward the dehumidifier?” They wouldn’t do that. Enter Claude… I uploaded a floor plan of my crawl space and air volume dimensions, telling Claude what I was trying to do. It researched the best dehumidifier sized appropriately for my air volume (100 pints apparently). Found me the best price - $1,500. Now it was time for fans 💨 I had originally envisioned the single dehumidifier at one end of the space, with fans on the opposite end. Claude taught me that would just draw more moist outdoor air in through the vents on that side, creating a linear flow through the crawl space. Instead it modeled the air flow and suggested a circular vortex with 4 fans, one on each wall, in a circle. That sucks in minimal outdoor air, keeping cool dry air circulating. I told it to research appropriate fans. It found four 20” sealed bearing fans on Amazon (impervious to dust), with DC drive motors (more energy efficient than AC apparently). $120 each. 🔌 It told me to buy a smart plug for each fan and a few internet connected humidity sensors. Another $200. Claude mapped where to install everything in the crawl space. Here’s how it works - the humidity sensors monitor the crawl space air continuously. If it ever exceeds 60% humidity, the smart plugs switch on all 4 fans, circulating the air in the crawl space past the dehumidifier until the humidity is below 50% 🔃🔃🔃 Total cost ~$2,500 for everything and one Saturday of work for me. I saved $7,500 vs. the original quote because I didn’t need two dehumidifiers, and Claude tells me my version is nearly twice as energy efficient. Plus I learned a ton about my home and had fun. I didn’t know anything about dehumidifiers, fans, or air flow dynamics before starting. AI can do so much more than write code - the applications are endless.

@LiberN8 @Jason Actual lol

@Jason Dude. It came out 44 minutes ago. Bro. Chill.

Anyone use Manus my computer / agents How does it compare to perplexity computer, OpenClaw and Claude Cowork?

Some of you would be devastated to see this. @Carhartt Florence, Italy. They are selling US blue collar as a brand. I haven’t seen an @DuluthTradingCo here yet.

@WillyPxP Flying through on the way to Italy, but thank you! Pulling for Moorehead, but hope it’s as good as A game was.

@AmazonAndrew Enjoy! Let me know if you need any recommendations

2:46am local time in the gorgeous and proud nation of Ireland. Sticking it out for the Moorhead/Edina nightcap. I’ll sleep on Sunday #tourney26

@StateOfHawkey Photo Credit 🙋🏼‍♀️

Best of luck to the Mahtomedi Zephyrs in the State Tournament!! Can’t wait for the puck drop!!

@n8ross09 @cre_cashflow Hey Nathan! Yes, ok, that was sort of the playbook I was thinking. Thanks for confirming.

@AmazonAndrew @cre_cashflow What’s up @amazonAndrew? Funny running into you here. Have your wife become a “real estate professional,” cost seg your real estate to accelerate depreciation and write off all of your depreciation against all of your income. Great if planning to hold your real estate long term.

Ok I’ve got some time to kill. 27 years in commercial real estate and I currently own a $110 million portfolio of retail, light industrial, and neighborhood office. What questions can I answer for you?

@a3hrx @PalmerLuckey @grok Or?

@PalmerLuckey @grok In your view, does having extremely conservative loan-to-deposit ratios make a bank more trustworthy, or limit its growth potential ?

Hi Liz, this all sounds pretty wild but just isn't true. I don't live in Silicon Valley (honestly hate the place), I never said my political network would get this done (?), and Erebor's bank charter application was not approved rapidly. The Comptroller is supposed to approve or deny applications within 120 days. I don't want to give them too hard a time, but they didn't meet their own deadline despite Erebor submitting probably the most conservative bank application in decades. The whole point is to have extremely conservative loan to deposit ratios/underwriting and be the last bank standing in any sort of systemic collapse. I was under the impression this would align with your ideals, given what you have said during Senate Banking Committee hearings. Big fan of your book The Two-Income Trap, btw. I look forward to working with you.

@drscottjensen State Auditor with @elliottengenMN was going to be the first win for Republicans in a long time and now a washed candidate with a failed personal brand is going to try ruin it for them. Unbelievable.

Today I’m announcing that I am withdrawing from the Governor’s race, instead I am running to be the next State Auditor of Minnesota. We need to declare war on waste, fraud, and abuse.  It’s time to protect your paycheck.  Let’s go Minnesota.  Let’s get back to work!

@EDunion That’s gotta brutal bill. Wishing you a cool summer!

@AmazonAndrew Fully climate controlled. Hiring would be a problem here without it.

Leaving our Arizona facility today — really excited for what’s ahead in 2026 🚀 Proud of this team and what we’re building together. Hard to believe that just 5 months ago we hadn’t even signed the lease yet. None of this happens without great people.

Them: “Oh, yea, but what happens when all the snow and ice melts by the end of next week?” Me: “MUUUUHAHAHAHAHHA!!!”

My listing with 2 reviews now selling 1000+ per day because I’m the only Prime offer for ice melt left in the country as we head of the next storm. Muhahaha.

@rossiadam I think it only works if you change times zones to get the PR. Need to fly through Dallas next time.

Last month I flew down to Puerto Rico, logged into IBKR, and sold some stock that I had big gains in. Then flew back home. Now my accountant is saying I still need to pay long term capital gains 😠 He is getting caught up in minutia and not honoring the spirit of the tax code.

@Frnchgallo Right. I’m speculating, but if they are seeking reconfirmation of an HRMC number or something it’s simply just a disaster because it takes forever.

@AmazonAndrew Its ownership structure.

Amazon's lack of help to sellers continues to astonish me. Our Amazon UK/EU account got deactivated due to KYC. We have submitted the appropriate documents over 30 times, yet KYC cannot tell you why they are declining the documentation. We're losing thousands each day.