Clairvoyance means "clear vision". Whenever I do any kind of reading, I psychically read what is going on for you whether it is past, present or future. I am able to "see" clearly in this way when I know nothing about you. Therefore the reading comes from a pure clear space with no added knowledge from before.
" It is good to have an end to journey towards, but it is the journey that matters, in the end"
(Ursula Le Guin)