The law of selective gravity is well known. A food particle that falls on the floor MUST bounce and roll into an inaccessible location, even if it has to bounce up over a threshold.
A separate camouflage law applies to the unfortunate particle that can’t bounce out of reach.
1. Brown food like bread and cookies must fall on a wood floor.
2. White food like cauliflower and ramen must fall on a white vinyl floor.
3. Red and green food like tomatoes and broccoli must fall on a patterned rug with red and green parts.
Polistra's Mill 