i've noticed a resurgence of columbian riders this season. of course they've always been known as great climbers (but not great descenders), but they were notable in their absence for many years. i wonder at the possible irony that perhaps they didn't have access to the same systemic doping programs and "medicines" (cocaine doesn't count) as the better funded americans & euros, and now that the sport is cleaner they're able to compete again. thoughts?