if we went to the future is is it possible we could walk through the school and see us sitting here at the computers?

Question: if we went to the future is is it possible we could walk through the school and see us sitting here at the computers? also, is it possible to go back to the past and catch up with the future?
- Keywords:
  future,
  human
Asked by 487yttc48 to Anna, Hayley, Iain, Rebecca on 25 Jun 2015.
- Iain Bethune answered on 25 Jun 2015:
  
  I don’t think time travel is possible in any meaningful sense. Stephen Hawking said that even if you could enter a black hole with the hope of appearing elsewhere in space-time then “your mass would be recycled” which does not sound like a very pleasant experience…

Question: if we went to the future is is it possible we could walk through the school and see us sitting here at the computers? also, is it possible to go back to the past and catch up with the future?