BTW, here's a hot tip - bet everything you own on the Mariners to win their first World Series...in AD 2243...
Bill, that would be the one against the Chicago Cubs, would it? A Mariner-Cubs World Series is a sign of the end times in the holy books of at least three major world religions!
Seriously, did Clark actually mention time travel? Or did he just mention faster than light travel? I find it far easier to believe in the latter than I can believe in practical use of the former.