In this clip from Roundtable on ABC.com, veteran political analysts and pundits discuss the recent controversy surrounding John McCain's dubious understanding of the US economy. The journalists in the clip are united on one key point: the Republican nominee's positions change with the wind, and he doesn't seem to have anything close to a clear agenda for getting us out of the mess we're in -- especially now, with the federal government getting involved to bail Wall Street firms out of the nasty predicament they've gotten themselves into after years of egregious spending. What's more? There is one damning aspect of McCain that will only lessen his already slippery grasp of our economy: his age.