> I wouldn't bother; the time for this is past. It is not worth curating tags/ontologies. Let the computer do it for you, or don't: just search.

The only mechanism that will ever be properly able to contextualize the relevance of my ingested information when it counts (as in while I am alive) is me; the only way to do this is by curation. A someone else who understood this once said: "The tool shapes the master; the master shapes the tool".

Manually assigning tags are an excellent way of doing this, as long as one doesn't overthink it to such an extent where the curation process meets the harsh realities of diminishing returns. Sadly, many people, constantly jumping from one fad to the next, already fail here.