Finding a needle in a very large haystack

It looks like using MALDI TOF/MS one can now do data mining that yields markers to Multiple Sclerosis. Let us hope a similar technique to find markers for autism can be developed similarly. Unlike what Paul Shattock says, I don't believe clues can be found in only one peak (IAG), but then again, we need to show that it is not a question of belief, we need large sets of data to correlate with the different signs of cognitive problems like autism and that, my friends, is a Grand Challenge.