TCP Shorts: Existence Proofs
An existence proof is simply a proof that shows a particular kind of object exists, or can exist. Why is that interesting? Because if you' »
Direction of Fit
There’s an intuitive difference between telling you to "close the window" and saying that "the window is closed." In saying that »
The Truth About Centrifugal Force
How our intuition about "G-forces" fails us You’re heading home on a Friday night, sitting in the backseat of your friend’s car, »
Combinatorics: Permutations
Even though counting is the first mathematical concept almost every kid learns, somehow a significant portion of cutting edge math research relates to questions that basically »
Rational Imitation
A great way to learn about the world is by taking the lead from others. If you are in another country for the first time and »