Yet five minutes after…I realized I had not actually seen the three plants in the little colony we had found. Despite all the identifying, measuring, photographing. I had managed to set the experience in a kind of present past, a having-looked, even as I was temporally and physically still looking. If I had the courage, I would have asked her to turn and drive back, because I knew I had fallen, in the stupidest possible way, into an ancient trap. It is not necessarily too little knowledge that causes ignorance; possessing too much, or wanting to gain too much, can produce the same result.
[John Fowles, The Tree]