Trader Joes house of shady deals

[Emperor's Child]

How do you tell exactly what is offered in a trade in a PBW game? I have never had the computer offer a trade to me, and now I’ve been offered a trade in a PBW game. I am curious how you tell exactly what is offered since I’ve heard of players gutting ships before a trade and other shenanigans like that. Technology trades you can’t fake, but if you can re-name planets you could also pull a fast one by colonizing a minor moon and then re-naming it to the name of the planet offered in the trade, etc.