Question: what do you think would happen if you wnet back in time and killed your great great grandpa

Sallie Baxendale answered on 10 Mar 2017:

Wow – great question. Its hard to get your head round this one. The laws of physics suggest that this wouldn’t be possible so nothing would happen because its not possible. But when something isnt possible you can use your imagination to think about what could be – then ANY thing could happen. What do you think would happen?