In the playoffs with seven game series, it's designed to go as chalk. But sometimes, 8 seeds beat 1 seeds. Sometimes, 8 seeds make it to the finals (ala Knicks without Ewing). Sometimes the "heart of a champion" shines through and old veteran teams who have been thare and done that win the championship (ala Rockets).
I'm not going to say "when we get healthy..." or "when the team turns it on for the playoffs...", but if you're writing off this Celtics team you're more than just being pessimistic, you're nuts.
Remember, ANYTHING'S POSSIBLE!!