The - how should I say - suspicious part is that "incredibly scientific" is meant to be an exaggeration - and one of the reasons is precisely the reason you mention: the sample is too small.
Of course, there are also other problems with these "incredibly scientific" samples, even for larger samples: for example, do the people who know about the Universal Thread tend to represent an accurate cross-section of the population in general (or in this case, of the part we are interested in: potential employees)? In even the most serious statistical analysis, there can always be doubts about this particular point: how well the sample represents the total population.
>You're right, I did not read well.
>
>>That might explain my very tongue-in-cheek title to this thread. It was not meant literally.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)