. >>> and now, to the town holst holstho holliston, west of boston. >> this is what the balancing rockk like that. 20 feet long. that boulder has fallen to the ground on its own. >> legend has it that george washington once tried to push the balancing rock over in 1789 and he failed. >> he was busy with a lot of physical challenges, right? there's that cherry tree story. his legacy can't seem to shake, no matter how many people try to debunk it. our first president, taking up the original physical tests of strength. >> getting this country started. which was harder, getting the country started or trying to push that rock? and is it a metaphor for today? >> deep questions again. >> too deep for this hour, right? >> yeah. >>> let's go to dogs that can do tricks, please. that's where it is. that's where it is. >> she caught on pretty quickly, how we operate here at "world news now." >> that's what i'm capable of right now, is dogs doing ricks, rather than a balancing rock being a metaphor for our current society. >> deirdre, you can come back anytime. we love you. >>> coming up, teaching