> > It's that they also seem to use them in ways that under other circumstances we'd call "lacking purpose", i.e., they're just cruising along in one direction at twice the speed of sound, then all of a sudden go "oh, crap! I'm going the wrong way!" and slam themselves 120 degrees in another direction in a fraction of a second.

> > It's that we also have to believe these apparently advanced aliens tend to crash surprisingly often, and that they don't want to be seen but just sort of accidentally get seen a little bit.

> That said I do admit to having a lot of trouble trying to understand why craft that are apparently capable of hypersonic travel would spend hours moseying down the California coast from Catalina to Guadalupe islands. I mean if they were trying not to be noticed why not avoid the Nimitz CSG completely ? And if they wanted to be noticed wouldn't they have done something a little more dramatic than floating along at 100 knots (they didn't exhibit any spectacular behavior until an attempt was made to actually intercept them) ?

These at least are pretty easy to put together: Teenage aliens out for a joyride.