"Based on my experience in this area and with this business, will I likely be asked about this later and will I confidently and easily be able to answer? Is the

"Based on my experience in this area and with this business, will I likely be asked about this later and will I confidently and easily be able to answer? Is the expected value of recording higher than the expected value of not (factoring in time, noise, mental load later etc)?" is something like what I ask myself to help decide. Also if you make it filterable and searchable (table instead of document format) you can minimise the issues of having a lot of them. You can add your own scale/importance tags as well to give a list of overview ones to read through too.