The PT (specifically TPM) also has no proper exposition as they expected you to have already seen the OT back in 1999.
Seriously, the PT never explains the Force. That info doesn’t come until “episode 4”. Of course there’s always someone to explain it for you, but you shouldn’t have to rely on people to do the film’s job for you.
This, and spoiling ESB, are my reasons to not show anyone SW in episodic order regardless of your opinion of the quality of the PT.