Scott texts Jenny a link to a pot pie recipe and seven numbers — 1:10, sensitivity 50, target 100, a blood sugar of 130 with a rising arrow — and asks for the whole bolus, fat and protein included, out loud and in her head. Then he runs the same link through the prompt he's been building for two months and reads the two answers side by side.
The seven numbers in Scott's text: carb ratio 1:10, sensitivity 50, target 100, the fat-protein factor left at default, current blood sugar 130, rising arrow, no insulin on board. Scott calls the default 50% on the recording, but every extended figure he reads back — Jenny's 3.5, the prompt's 3.25 on 3.26 fat-protein units, the strategy engine's 3.26 — is one unit per fat-protein unit at 1:10. That is a 100% factor, so this page runs at 100% to match the numbers on the tape. 2:20
No nutrition label. No calculator. One link, seven numbers, and a Monday morning between Christmas and New Year's.
Scott hit record before Jenny had any context. A few minutes earlier he'd texted her a pot pie recipe and a list: one, 10. Two, 50. Three, 100. Four, default. Five, current blood sugar 130. Six, rising arrow. Seven, no insulin on board. One serving. Whole bolus, fat and protein included, and he wasn't telling her what any of the numbers meant.
Eight servings, a homemade top and bottom crust, and a busy website full of ads.
Flat at 100, Jenny wouldn't pre-bolus a slow, fatty meal like this at all. But 130 and rising means a deficit of insulin already. A diagonal arrow is roughly 2 mg/dL a minute — do nothing for thirty minutes and you could be 60 points higher, sitting at 190 before the pie lands. So: pre-bolus, and wait for the arrow to stabilize.
Add the base units, layer a correction — the A and the L of Meal Bolt.
His honest version, in his words: a rising blood sugar, so cut the arrow off and get it coming down before you eat. Pre-bolus twelve, fifteen minutes. Extend it out more hours than you'd think, because this thing is going to hit again — maybe at ninety minutes, maybe again after that with all the gravy. The math Jenny just did, he says, he couldn't do with a gun to his head.
Scott writes it down at 25:35 — carbs 35, fat 30, protein 20, bolus 3.5, correction 0.6, up front 4.1, extended 3.5. Total on the tape: “four five six seven,” 7.6. The estimator's math on the same macros: 4.10 up front, 3.50 over five hours, 7.60 total — Jenny's head and the tool land on the same numbers.
Two months of feeding Bolus 4, the Pro Tips, Bold Beginnings and the Warsaw episode into a deep-research model, arguing with it, and asking for a prompt. Here's what it sent back for one-eighth of the pie.
Deep research in Gemini and ChatGPT, fed the Bolus 4 episodes, the Pro Tip series, Bold Beginnings and the Warsaw Method interview, then told to fact-check all of it on the internet and hand back a prompt in plain English. About three pages. It first cut the pie into six; Scott told it to make the serving one-eighth and re-evaluate. That's the only change he made.
As Scott read it: immediate bolus 4.4, 3.26 fat-protein units, an extended wave of 3.25 units, total dose 7.65. Dual or square wave over five hours, pre-bolus thirteen minutes. The estimator's math on the same macros lands at 4.40 up front and 3.26 extended — a hundredth apart from the prompt on the extended, the rounding on 3.26 units.
Scott: “Look how close you were on all that. That's amazing.” The 0.3 up front is three more carbs in the prompt's count. Jenny: “I was a little bit over in protein and fat just slightly. So that would make the difference too.”
Because Scott taught it Meal Bolt, it wrote the L and the T for him.
The recipe says eight right there, and the prompt cut it in six until Scott corrected it. Jenny's worry is the family that doesn't catch that: they put in all the insulin, they go low, and they gave it every right number. “It's a really, really important piece.”
“I always try to think what's usable.”
While Jenny was talking, Scott typed a second dinner into the prompt. Then he logged into the things that aren't public yet.
Same parameters. He didn't tell it anything about how any of it was made.
The hidden, password-protected page on Scott's site, fed the prompt's macros: 4.6 initial bolus, 3.26 for the fat-protein units, 7.86 combined, dual wave over five hours, wait thirteen minutes. Against the prompt's 4.40 / 3.25 / 7.65 — “they disagree by point two,” and that's the target being 90 here instead of 100. Jenny: “Which is negligible for most people.”
Scott's picture: start with your weight, get the three numbers, put them in the machine, then hand it a link to dinner. Ninety-seven disclaimers, maybe a five-dollar-a-month paywall to cover the tokens, and he still isn't sure he'll ever make it public. Jenny's question is why it doesn't already ship with every pump: your doses are prescribed and approved, and the app just puts them where they go and times them. “This isn't rocket science.”
The numbers that transfer to the next one.
“It's a magic trick to me.”
“I'm more pleased that it actually is verifiable what I know how to mentally compute.”
“Hire Jenny if you can. If your brain works that way, god bless you.”
“This isn't rocket science.”
Every number on this page, with your own settings.
Open it →The methodThe tutorial the whole series is built on.
Read it →The collectionTap the cart and pick a food. One page per episode, with Scott and Jenny.
Open the cart →