Oxygen. Water. Food.

Oxygen. Water. Food.
All required to sustain human life.
Also, each can be lethal.

Too little, we die.
Too much, we die.

The dose makes the poison.

So, we exist on a spectrum.

At the edges: lethal.

Somewhere in the middle, our options:
- sufficient ("good enough")
- average ("what everyone else is doing")
- optimal ("what's best for me")

Knowledge is when the information makes sense.
Intention is deciding what to do about it.