Job change cooldown, why is there?

[Rhas]

For classes it should be more like it wa sin 1.0, where you are limitd to 10 skills, but you could pick up anything from any other class. I don't understand why I can't raise or use protect as a miner or botanist... If I know them.

You couldn't use them in 1.0 on miner or botonist that I remember.