Some performances are more equal than others.
The tie-breaking method employed here is to remove the lowest score, and then add the rest up. Something not obvious here is that this seemingly arbitrary method rewards the performance with the greatest spread of scores (i.e. the ones where the judges were least able to decide what score was proper).
Let's do a bit of math: let's assume that two gymnasts get a score of X. Let's assume that gymnast A got the exact same score from all 4 judges: X/4. On the other hand, gymnast B have judges who disagree strongly about the proper score. Assume that the most irritable judge awards a score equal to X/4-Y (i.e. the score is Y less than the average score for gymnast B). Since the total score ends the same as gymnast A, it follows that there must be a judge or group of judges collectively that awards X/4+Y. By dropping the lowest score and adding the rest, you are giving gymnast B the gold by the margin of Y.
If you lop off the highest score, you instead reward consistency of judging. So, instead of having a tie-breaker reflecting anything having to do with the Olympians, the tie-breaker is really all about the judges.
The most fair thing to do, it seems, is to award two gold medals.
