Here is a question I found hard to give a reply , I am still without an answer , it went on the lines like this=
If you had a spacecraft that could travel at light speed or faster then which way would you point your ship if say you wanted to travel to the future or back in time
Would you then come back to a rich stephen hawkings after depositing a single dollar for him after 40,000 years or would you still have a dollar to invest for say stephen hawkings
