dingocat. as fyron says it doesnt matter what slot. heres a test.
create a map using the editor.
select 1 system and mod one of the planets to match your races homeworld type.
on that planet under abilities give it ancient ruins with, i dunno say 100 in value one.
next select another planet and create a specific starting point for yourself. player 1.
save map and load it in a new game.
select your techs you want to research.
create a colonizer and colonize the world you modded. it should give you upto 100 tech advances. should be easy enough to see if it affects slots other than the first one being researched.
checkmate
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