One letter a week.
Written from your own results.
The Logic Letter is the weekly dispatch from LifeByLogic. Every reader gets one well-cited idea, one tool worth trying, and one move to make this week. And once you’ve completed a couple of our assessments, the letter is generated from your profile — your own patterns, where they pull against each other, and what they mean for the days ahead. A few minutes to read. No tracking, no noise, one-click unsubscribe.
One idea, three ways in.
Every issue is short and built for thinking, not scrolling — one well-sourced idea from the LifeByLogic labs, and two ways to act on it before the next one arrives.
An idea, well-cited
One finding from cognitive science, behavioral economics, or decision research — sourced inline, with DOIs where they exist. If a study has been contested or replicated, the letter says so.
No assertion without a source.A tool to try
A pointer to one of the LifeByLogic instruments that fits the week’s idea — the same validated tools you already use, placed in the context where they earn their keep.
Methodology you can apply.A move to make
One small, concrete experiment to run before the next letter lands. Specific enough to actually do; modest enough to actually finish.
Read in minutes. Use the same day.The more it knows, the sharper it gets.
Most newsletters send everyone the same thing. The Logic Letter can do better, because it can read your own results. Two editions, depending on how much you’ve told it.
The shared edition
Start here. One cited idea, one tool, one move — the same well-made letter for every reader. No account required; just your email.
Everyone, every week.Your personal edition
Complete at least two assessments while signed in, and your letter is written from your LifeGraph+ profile — addressed to you, drawn only from your own results: the patterns you show, where they pull against each other, and one experiment that fits them. It keeps sharpening as you complete more.
Two assessments unlocks it.The questions we hear most.
A few quick answers before you sign up.
Yes. The weekly letter is free and meant to stay that way. If we ever add a paid offering, it would be additive — most likely tool-level extras like detailed PDF reports — never a removal of the free letter you signed up for.
Subscribe with the same email you use for your LifeByLogic account, then complete two or more assessments while signed in. From that point on, your letter is generated from your saved results. Until then you get the shared edition — and the upgrade happens on its own, with nothing to configure.
Once a week, on Saturday morning. After you subscribe, you’ll get one email asking you to confirm — click the link, and the letters start arriving automatically. No confirmation, no letters; it is a strict double opt-in.
Your email address — and, for the personal edition, the assessment results already saved to your account. No tracking pixels, no per-click profiling beyond aggregate counts, and the list is never shared or sold. Full details are in our Privacy Policy.
A one-click unsubscribe link sits at the bottom of every issue. One click and you’re out — no retention emails, no “are you sure?” popups, no follow-ups asking why.
Start with the shared edition. Make it personal when you’re ready.