I think perpetual motion is the wrong way to go. Mark Twain lost all of his money on a wide variety of speculative investments, most of which I would call fair

I think perpetual motion is the wrong way to go. Mark Twain lost all of his money on a wide variety of speculative investments, most of which I would call fairly reasonable. Getting in on the ground floor does you no good if it's the wrong kind of ground floor, or if it's the right kind of ground floor but the one next door ends up going to the moon while yours falters, or even if it's the right exact ground floor but you go bankrupt investing too early and the person who buys it from you rides it to the moon.