Force44
King
I wanted to make the Ancient Cannon a Trebuchet that is available earlier, but making it available too early would make it really overpowered. The Alphabet is more or less the exact time when I want to make it available. I didn't find any other tech which is suitable for making the Ancient Cannon available, so I stuck to it. (And I never bothered to change it after I initially made that decision) If you think another tech is more suitable, just let me know.
Also, for a weird reason I can't explain, I do think that the Alphabet is somehow a fitting tech.
Ballistics are a weird (often counterintuitive) bunch of mathematics, like most physics, which are often made more comprehendable with substitutes (of letters/characters) for numbers/long descriptions.