Reply #15: I don't remember the title.

[Ready4Change]

Company offers the ultimate safari deal. They research archological finds, determine exactly where prime dinasour specimens died, then provide hunters with the means of going back in time to that spot so as to shot their prey. (Have to leave the dinasour body there, of course, so that it can be found by archeologists later.)

To ensure that hunters change nothing, they are dropped onto a platform that floats a couple feet off the ground, and they aren't allowed to touch ANYTHING, except their prey with a buller.

So, this hunter goes back to shoot a T.Rex. (What else?) The hunt is strenuous, so much so that he is thrown off balance and takes a sigle step off the platform. But, despite the odds, he manages to shoot his T.Rex in the right spot at the right time. Success!

Until he returns home. Cloths, colors, fashions, governments, people are all changed. He reports this, and they launch an investigation. The only thing the investigation turns up is a single butterfly, crushed onto the sole of the hunters boot during that single step off his platform.