In a world where time travel is real, and everyone has a smartphone, the art of linear contact has become the norm. It's not about love or friendship; it's about efficient communication in a world where time zones are just a suggestion.
Methods of Contact: From quantum entanglement messaging to temporal email.
The Paradoxes We Face: Time-traveler's edition.
The Linear Physics of Time Travel: Because, let's face it, time is just a number, right?