/sci/ - Science & Math

Okey /sci/ I've got an evil genius plan, and I want you opinion.

When I go to pay my tuition I'm given a form where I fill in the amount I'm paying, then I use a debit card to make the payment. The form gets a stamp of approval and a few days later its processed.

I'm thinking of using some kind of ink which is invisible until its been exposed to the air for a few hours combined with regular ink. I cold write 100 on the form with regular ink, then put an extra 9 in front using time delayed ink. I only pay 100, but when its processed 9100 is deducted from my tuition.

How can I make ink like I've described?

Pic is unrelated.

Any neuro/sci/entists here tonight?

I've got a theory that phobias and fetishes are caused by the same part of the brain, or two very similar parts of the brain.

Arousal and fear are probably the two most important emotions responsible for keeping animals alive, so it would make sense they come from primitive inherited parts of the human brain, not the fancy new logical/social bits.

Both are illogical associations of certain objects with the emotions of either fear or arousal.

As far as I can tell they're exactly the same other than triggering different emotions.