@Frank Apisa,
It 'd be fun to try.
I remember, when I was 9,
I built a house up in a tree.
I went up there and fantasized
about taking a .45 Thompson Submachinegun
back in time and doing the job on Karl Marx
b4 he cud make any trouble. In retrospect,
that might well cause less defensive R & D,
resulting in not enuf information to execute the trip.
It 'd be fun, tho.
David