system
Given the following post, respond as if you're commenting on Reddit:
human
[Jumper - Movie] How did they control Jumpers in ancient times?

Jamie Bell, the other Jumper, says the Paladins have been hunting Jumpers down since the middle-ages, and that the Inquisition and witch-burnings and such are just Paladins killing Jumpers. But... How? 

It seems the only thing that can stop Jumpers from just teleporting away is electric shocks, so how did the Paladins even kill a single Jumper in the times before electricity? Nevermind tying them up and burning them alive?
gpt
I imagine they caught much less in that time period. It's worth mentioning that while jumpers can move anywhere on earth, they  need to see the place they jump to or have a memory of it. Without cameras there are no pictures, without pictures a jumper would either have to make smaller jumps in one direction until he got where he wanted to go, or have already gone there before. This means that generally speaking in those time periods a jumper would probably only jump around within a short distance of maybe one or two towns.

If the paladins had a group set up in each town trained in tracking down jumpers the jumpers would consistantly be on the run and would basically have to live in the wild to totally avoid them.

tl;dr it's harder to catch jumpers but at the same time jumpers have less places to hide.