Well yeah I think that's just the nature of what we've been trying to explain or describe since fire or the wheel was nailed down. If we look at smell or taste, I'd say we have similar problems describing that, and it would be virtually impossible to describe a smell to someone without comparing it to other smells. Taste is a little easier because we have salty, sweet. sour, bitter etc, but again, if one doesn't know bitter one gets nothing from the comparison word. Comparisons are not descriptive, and there are lots of things we can only transmit to others verbally by comparing them to stuff known to both parties. Can anyone really describe the experience of a bitter taste without comparing it to things we have experienced and know to be called bitter? So while most of us have had this or that experience we couldn't attribute to a known and defined physical cause, none of us seem able to describe those experiences in terms that are universally understood. Sometimes though, two people who have had very similar experiences can discuss and note the parallels, even while not being able to paint a clear picture. The problem with this is that we have a long history of (presumably) nutters who agree they were abducted by aliens, or died and met God who had a long white beard and robe. IMO we will never all agree on the existence and nature of this area of the unexplainable.