I love the 80s
1987 A.D.: The Norse military rolls out its first mobile SAM anti-air units and its first armored battalion. Medical advances spur on a population boom.
I had SO MUCH SCIENCE at this point that I overshot Advanced Ballistics and picked up Penicillin in the same turn, the first time I've seen that happen in Civ V. The latter give me access to Marines, infantry that excel attacking from water, and hospitals, which make my cities grow crazy fast. Up next on the science docket: Nanotechnology, which will let me build the Spaceship Stasis Chamber.
1988 A.D.: Work begins on the propulsion systems for Sleipnir in Sigtuna.
1989 A.D.: Somewhere, a totally amazing guy is born who will go on to write about computer games.
Yeah, I'll give you three guesses and the first two don't count...