the AI answer is only as good as the question asked.
IF you are lucky, because even with a decent question, there is also the factor of the rarity of the subject. After all, if there is very little training material in the internet, the LLM might not have run across it and thus not "know" much about it.
For instance, in modern terms, if you now ask for the meaning of the word "parachor" you will get a physical-chemistry answer having to do with surface tension in a liquid where the surface is exposed to open air (and thus, atmospheric pressure.) You measure it based on the meniscus of the exposed liquid. It is indirectly related to the compressibility of the liquid, and therefore is of interest wherever you have hydraulic lines or anything else transported by tubing.
Back in the 1960s it had another meaning. In the days when virtual demand-paging operating systems were coming into focus, the "parachor" was a task-specific measure of program efficiency as a function of how much physical memory was allocated to that task. There is an inflection point in the graph of efficiency vs. allocated memory. To the "less memory" side of that inflection point, you get dramatic increases in efficiency as you add memory. To the "more memory" side of that point, adding more memory has a far lesser effect. That inflection point is the parachor for that task.
The "rarity" comes into play because these days, it is possible to get 16 Gb of RAM pretty easily, and despite the nearly innumerable service tasks running in Windows (run Task Manager, Processes display to see them all), you usually have over half of physical memory still available. However, in the days of 4 Gb of RAM being considered a huge machine, a LOT of stuff ran as virtual processes and only paged in when needed. In that context, the parachor was a subject of much discussion. Now, not so much.