1. The propensity of the food to fall
2. The likelihood of the food becoming attached to or inserted into the keyboard
3. The degree of difficulty associated with the removal process
Their list is good, but not nearly long enough. I would add (for starters)
- Salted Pretzels
- Anything at all with jimmies or those tiny variously colored candy pellets on them (you know, like cupcakes and such).
As you were.