Please please please fix "sort by date" filter. Searching for "natural language processing" returns 3,330,000 results with the default "sort by relevance" and 4,730 with "sort by date."
I've noticed this completely nonsensical behaviour with regular Google too. "Sort by" shouldn't ever be a "filter" --- but an ordering.
The result counts are usually highly inflated and approximate anyway (i.e. can you eventually actually get all 3M+ results?), so perhaps they don't mean all that much.
The best explanation for that anomaly, which is more of an excuse, is that they don't want to spend computing power sorting all the results.
Nevermind the fact that sorting by date is probably much easier than computing "relevance" and sorting by that...
Only guessing, but maybe they don't have a date for the rest. In that case one of the sensible things to do is what they seem to be doing - only showing those for which they do have a date.
