I constantly forget which is which out of most of these.

effects.md

Effects

• Baader–Meinhof phenomenon: tendency to notice something more often after becoming aware of it
• Dunning–Kruger effect: illusion of cognitive superiority
• Leidenfrost effect: droplets of water float on hot surface
• Mandela effect: false memories shared by multiple people

laws.md

Laws

• Betteridge’s law of headlines: headlines with a question can be answered “no”
• Brandolini’s law: the energy needed to refute bullshit is an order of magnitude larger than to produce it
• Brooks’s law: adding people to a software project makes it take longer
• Conway’s law: system design tends to mirror the organisation’s communication structure
• Cunningham’s law: the best way to get the right answer is to post the wrong one
• Goodhart’s law: a metric that becomes a target is no longer a good metric
• Hanlon’s razor: never attribute to malice that which is adequately explained by stupidity
• Poe’s law: satire can always be treated as sincere
• Sturgeon’s law: 90% of everything is crap

paradoxes.md

Paradoxes

• Braess’s paradox: adding capacity to a road network can slow traffic flow

principles.md

Principles

• Peter principle: employees are promoted to a level of incompetence