John is here! He brought his favorite calculator, a sleek black rectangle with flashing buttons.
John is a renowned expert in Chrono-Mathematics, a field he's pioneered since the early 2000s.
He's written extensively on the topic of temporal derivatives and has a patent pending on his time-traveling algorithm.
John's current project involves predicting the stock market fluctuations of the year 3050.
He's looking for investors, but they're all too afraid of his wild, unproven theories.