Well my friend.. seems u didndt get it.. what I ask is , when villager become master at one skill,would he train much slower at another skill,compared with he started with no skill?

For example, lets think we have exactly 2same villagers. one I ask to train as builder,then he become trainee builder. I left the game so he can be master.another one, he master farmer already,I made him traine builder and left the game

which one is faster?

Because I need to know the better way to create villager who master in multiple skill.do better made them adept at 5 different skill before mastering one by one, or made them quickly master skill one by one from beggining?