Facts that are derived from the scientific method I described above.

Usually your hypothesis comes before the experiment/data collection. It’s what you expect to happen given your previous knowledge of the subject.

A theory is knowledge that’s been gathered by a study and has been replicated by a separate study.

Alternatively keep a box of kitty litter or a bag of sand in your trunk and you don’t ruin your car mats, or get a towel wrapped around your wheel.

Same reason why Lego is so popular. You can create pretty much whatever your imagination can come up with.