The article is... Definitely longer than it needs to be. Aristotle's "final cause" - that a thing could be considered to be caused by the ultimate purpose for its existence; the beauty of art, as an example - is pretty interesting.

That said, I really just wanted to link some interesting thinking / writing on time travel, that treats it pretty well:

- Primer (http://www.imdb.com/title/tt0390384/)

Probably the most popular. Engineers accidentally invent time travel, and then VERY CAUTIOUSLY begin to experiment. Takes more than one viewing to follow. Something resembling multiversal-style TT.

- Time is Like a River (https://www.fictionpress.com/s/3138462/1/Time-is-Like-a-Rive...)

A little girl discovers she can time travel, but cannot make paradoxes, but can still make choices... Although the writing itself is not the best, the gradual exploration of the ability - how to use it, what is possible - is incredible. Single timeline, zero paradoxes, uses something like self-reinforcing probability as the underlying "rule"

- Continuum RPG http://www.aetherco.com/continuum/

"The universe doesn't prevent paradoxes, people do". An attempt to make a playable single timeline, zero paradox, time travel RPG. The underlying reality is extremely well thought out, presenting reasonable ways for such a universe to function, although sacrifices are made so that humans can actually successfully play the game.