I'm in the process of building my own time machine, but my progress has hit a brick wall because I'm missing a couple of critical components, like a transgalactic time discombobulator.  I can't even find them on eBay.  (I suspect this is because they haven't been invented yet.)  Okay, so of course this is a problem…  But I have a plan!  I figure someday in the future these parts will be available, and my future self will finish the time machine, then come back and give me the parts.  So any day now they should be showing up, and I'll be rich & famous.  I can hardly wait…  This is gonna be cool…