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Saturday, January 3, 2026

AIYING in Practice — Equity Research (Assumption Stress Testing)

AIYING — The Discipline of Accomplishing with AI



AIYING is not about using AI tools faster.
It is a discipline for clarifying intent, designing outcomes, and using AI as a thinking partner to accomplish meaningful work.
It shifts the focus from asking for outputs to working towards outcomes — especially in high-judgment domains.


AIYING in Practice — Equity Research (Assumption Stress Testing)

Intermediate · 20–30 minutes · For investors, analysts, serious learners

Purpose of This Practice

To strengthen an investment thesis by identifying, questioning, and stress-testing assumptions before markets do it for you.

This practice is about fragility detection, not prediction.


Step 1 — The Hidden Risk in Most Research

Most equity research looks confident because assumptions stay invisible.

Typical statements:

  • “Margins will normalise”

  • “Demand will remain strong”

  • “Execution risk is manageable”

These are not facts.
They are assumptions wearing confidence.

Markets punish unexamined ones.


Step 2 — Apply the AIYING Outcome Clarifier

Before involving AI, write this down:

1️⃣ Outcome
What decision depends on this research?
☐ Buy ☐ Hold ☐ Avoid ☐ Position sizing ☐ Risk framing
✍️ Outcome: _______________________

2️⃣ Thesis Core
In one sentence, what must be true for this investment to work?
✍️ Core belief: _____________________

3️⃣ Assumption Density
Which part of the thesis feels most fragile?
☐ Revenue ☐ Margins ☐ Costs ☐ Timing ☐ Execution ☐ External factors
✍️ Fragile zone: ____________________


Step 3 — Surface All Assumptions (Critical Step)

Ask yourself (or list manually):

  • What am I assuming about customers?

  • What am I assuming about management capability?

  • What am I assuming about competitors’ behaviour?

  • What am I assuming will not happen?

Write them all down.
No filtering yet.


Step 4 — Reframe the AI Ask (Key Shift)

Instead of asking AI to validate your view, ask it to attack it:

“List the key assumptions underlying this investment thesis, explain why each could fail, and identify which assumptions are most sensitive to small changes.”

This is AIYING in Practice:
using AI to reduce self-deception.


Step 5 — Stress Test, Don’t Defend

Now take the top 3 assumptions and ask AI:

  • What early signals would indicate this assumption is weakening?

  • What data would confirm it is breaking?

  • What second-order effects follow if it fails?

✍️ Insight: _______________________


Step 6 — Human Judgment Check (Non-Negotiable)

Step away from AI and answer:

  1. Which assumption do I want to be true?

  2. Which assumption would hurt the most if wrong?

  3. Which assumption am I least prepared to monitor?

✍️ Reflection: _______________________

This step cannot be automated.


Step 7 — Build the Assumption Watchlist

Turn stress-tested assumptions into a live monitoring list:

  • Metric to watch

  • Update frequency

  • Threshold that changes your decision

This converts research into ongoing judgment, not static reports.


Why This Is AIYING in Practice

AI cannot eliminate uncertainty.
But it can expose where your thinking is brittle.

In equity research:

  • Returns come from insight

  • Losses come from ignored assumptions

AIYING in Practice — Assumption Stress Testing
is how analysts stay ahead of reality instead of reacting to it.

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