Everything I Ever Needed To Know I Learned From RPGs

Armor is always cheaper than resurrection.
Oratory only impresses some of the people.
There is more than one kind of intelligence.
Always keep a weapon hand free.
Travel is its own reward.
Relative superiority in foresight is functionally equivalent to magic.
Over time, criticals and fumbles will balance out.
The right tool for the right job.
An object's encumbrance is a factor of its utility.
If you can't afford to use it, you don't need it.
Good and evil are subjective.
If you don't trust the GM, you're not going to have fun.
Everything follows from your victory conditions, yet victory conditions are arbitrary.
You never run out of monsters.
There's always someone with more hit points than you.
Simulations are always imperfect.
Unearned victories not only rankle, they also camouflage deleterious plot developments.
There are two "i"s in "milieu."
Damage is useless without accuracy.
Mastery in one skill will get you fame. Competence in many skills will get you out alive.
Most people agonize over big life-decisions and leave little life-decisions to mood, historical precedent, or to arbitrary whim. Statistics show that better results are achieved by the inverse priority.
Speed matters.
Expensive transportation is a liability.
The value of reward is not fixed.
Justice is made, not given.
The police get to do whatever they want.
When you're saving the world, morals are expendable.