I read the rule book for Merchants of Venus. I saw that when you want to jettison a teach it goes back to the culture supply area on the side of the board for the culture that gave it to you.
I also read that when the Market Production icon comes up because of a Market Shift or an Encounter Card that you bring back goods from the supply area to the market.
My question is, how do we get the techs that go back to the supply into the market? The Market Production in the rulebook specifies goods but I didn't read a way to bring techs back.
If a tech is jettisoned, is it gone forever?