In reply to Michael Gordon:
Agreed, although I think an even better analogy would be Bolt's foot touching the lane line. Another example would be a long jumper encroaching a mm on the plasticine.
On the many discussions on this topic on UKC those saying the decision was wrong at least imply the issue is specific to climbing. It is not, all competition sports have rules and many of these are incredibly subtle in terms of doing something wrong. They rules are there to ensure a fair playing field at the highest level of the sport and where incredibly small advantages can have a big influence on the outcome. Unfortunately in some cases athletes fall foul of the rules by mistake but these are rare occasions. Overall the fairness of the competition from rigorously applied rules far outweighs the very small number of unfortunate cases like Ondra.
Similarly, the qualification stages in many Olympic sports are quite bizarre to outsiders and can lead to the world's best not making it. The multiple possible qualification stages in climbing at least mitigates one off problems and gives the top climbers another go (unlike in some sport's qualifications which are very much do or die).
In many respects Ondra has put himself in a difficult position by making the decision to ignore speed climbing. He clearly miscalculated the importance of speed climbing to his qualification and probably for the final event as well. He was very clear in one of his early Youtube videos on the road to the Olympics that he was deliberately not going to train for speed. If he does not make it eventually it will be this decision that is to blame in my view and not a one off mistake in touching a bolt.
Of course, none of this detracts from the fact he is probably the world's best (overall) climber today. It is just competition sport is different. There are a number of sports where the Olympics is not the pinnacle of the sport or for which the winner would be judged the best in the world (windsurfing is an example I know very well). But I would also not detract from the exceptional climbers that will be at the top in the Olympics.