JP Castlin
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jpcastlin.bsky.social
JP Castlin
@jpcastlin.bsky.social
Ex-lawyer strategy advisor + author. Discoverer of dynamic uncertainty, inventor of the 4E model of market dynamics, creator of frameworks, and PA of (a.k.a. father to) Idun and Edda. As seen on stage, on TV, in books, in newspapers, in columns, etc.
As always, I hope that you will like it and have a great weekend.

strategyinpraxis.substack.com/p/the-one-on...
The one on behavioral science
Well, part of it anyway.
strategyinpraxis.substack.com
November 28, 2025 at 9:45 AM
— Logically, the classification of people as “irrational” relies on an assumed ability to identify an objective (rational) ideal. But the verisimilitude of the identification can only be established by someone with greater knowledge, and so forth in perpetuity.
November 28, 2025 at 9:45 AM
— The Betty Crocker “Just add an egg” story is used as a neat psychological lesson, but is simply not true in the way it is most often told.

— The issue has turned into a worrying trend; a number of psychological studies have proven to feature irreproducible evidence and questionable practices.
November 28, 2025 at 9:45 AM
The TL;DR:

— Humans are naturally drawn to simple, linear cause-and-effect stories because they provide the illusion of control.

— Behavioral science in practice often gets unjustifiably reduced to irrationality, biases and nudges, promising fixes so easy that they appear to be cheat codes.
November 28, 2025 at 9:45 AM
As always, I hope that you will like it and have a great weekend.

strategyinpraxis.substack.com/p/the-one-ab...
The one about the essence of strategy
A one-week off piste
strategyinpraxis.substack.com
November 14, 2025 at 8:04 AM
There are a number of key questions that every strategist should ask, as doing so habitually makes the difference between failure and success. Alas, too few do.
November 14, 2025 at 8:04 AM
The true essence of strategy is using scarce resources to enable movement in a wanted direction under conditions of uncertainty. Of course, that could also be a definition of calling a cab.
November 14, 2025 at 8:04 AM
Strategy’s core challenge is one of trying to shape an uncertain future. Selling it as a “sure thing” thus fundamentally misunderstands what it is.
November 14, 2025 at 8:04 AM
To make matters worse, academic and practical views clash, not least because the former attempts to uphold boundaries that the latter cannot afford to be limited by.
November 14, 2025 at 8:04 AM
“Strategy” has become a wildly overused, stretchy buzzword; there is an abundance of confident claims, but a shortage of informed conclusions.
November 14, 2025 at 8:04 AM
— The guardrail setup preserves freedom to adapt while capping downside, making the firm more responsive in complex environments demarcated by dynamic uncertainty.

As always, I hope that you will like it and have a great weekend!

strategyinpraxis.substack.com/p/the-fourth...
The (fourth) on decision-making
Just one more
strategyinpraxis.substack.com
November 7, 2025 at 8:41 AM
— A different (read: superior) approach is to use guardrails with three parts: containing limits (non-negotiable constraints), resource frames (budget/time caps), and exploratory affordances (small, reversible bets).
November 7, 2025 at 8:41 AM
— To make matters worse, as firms grow, they often add layers and informal “stage gates” that have the appearance of governance but mostly entrench power and slow learning.
November 7, 2025 at 8:41 AM
— Success itself creates new problems: it attracts competitors, breeds complacency, and encourages like-minded, copy-paste thinking that reduces invaluable adaptability.
November 7, 2025 at 8:41 AM
Main topic TL;DR:

— Most conventional strategies fixate on reaching a desired end-state, but ignore the consequences of actually succeeding.
November 7, 2025 at 8:41 AM
Additionally, a very short report from the proverbial trenches: it turns out that more and more people, from all kinds of professional works of life, are starting to use the ABCDE framework and the concept of dynamic uncertainty, respectively, to great results. VERY cool, that.
November 7, 2025 at 8:41 AM
· Praxis is uncomfortable because it exposes both our thinking and our work to judgment — but that discomfort is exactly where improvement, learning, and meaningful impact live.

As always, I hope that you will like it and have a great weekend.

strategyinpraxis.substack.com/p/the-one-on...
The one on theory vs practice
A free-for-all
strategyinpraxis.substack.com
October 31, 2025 at 9:02 AM