Talk:Seeds/@comment-66.169.162.54-20161013215136/@comment-212.181.159.170-20170623100757

To expand on my comment above...

Since there is a lot of "crap" you can find, it feels more rewarding when you find something good, which also ties into another phsycological effect (which I've now forgotten the name of, bummer) where you get addicted to something which has uncertain chance of reward.

You can study this effect easily on animals: Give them a button that that dispenses food. Now if the button *always* dispenses food when pressed then they will, after abusing it for a while, only press it when they acutally want food (or are very bored). But if you make the button dispense food only *sometimes*, like randomly and only 20% of the time, then they will press it like crazy mad. It basically becomes a food slot-machine at that point.

TL;DR:

Range of bad and good items = uncertain reward for exploratory efforts.

Uncertain rewards = Addicting to your brain.