Enough, with evidence
The Plenty Principle
Turn “make it random” into a measurable decision: name the attacker, count their opportunities, add margin, and stop when another limit takes over.
4 instruments
One claim, three lenses.
Change depth inside any card. “Another example” adapts the lens to the situations you chose during onboarding.
One idea · three lenses
A secret is a guessing game
Hide one card while a friend guesses. Ten possible cards are safer than two only when your friend really believes all ten could be hidden. A pattern such as “always choose the ace” makes the pile look large but the guess easy.
One idea · three lenses
Who is doing the guessing?
A sibling trying four screen codes is different from a thief who copied a locked file and can try all night. Before choosing how much is enough, say who the guesser is and what stops them.
One idea · three lenses
Cross the line, then leave room
If a guesser can open one thousand boxes, do not hide the prize among one thousand and one. Use a much bigger field so a bad estimate, a faster guesser, or plain bad luck still does not reach you.
One idea · three lenses
More paint does not strengthen a cracked hinge
Once the lock is far harder to guess than it is to pry off the door, improving the guessing part again changes nothing useful. Fix the hinge, protect the key, and make recovery work.
Bench notes
Keep these three.
- 01
Entropy decisions begin with a generator and an attacker—not an impressive-looking output.
- 02
The Plenty Line combines trial budget, acceptable risk, and conservative margin.
- 03
After crossing the line, improve the next weakest part of the system.
Local field-note progress
Finished The Plenty Principle?
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