Some players (especially in turn-based games) wait for everyone to pick their tech cards (build wonders and pick leaders too) so they have more information and can make decisions based on what the other players pick.
I think the choices in each stage should be hidden and resolved only after all players have made their choice, otherwise players can basically cheat like this.
I think the choices in each stage should be hidden and resolved only after all players have made their choice, otherwise players can basically cheat like this.