Time: it might be the most difficult thing for me to fully comprehend.
Time is, by essence, logical. It can be measured. It can be graphed and charted.
It can be traced.
But time is also complicated by the other swirling elements that are as central to the truth as time. The emotion you feel at a time can make the empirical nature of what really is or was shift. You no longer see purely the moment of the time; you feel yourself while you're in it -- and afterwards.