The polarity can be instantly reversed. Maybe this is the secret power of the month of Iyar , the month of the vav , the month of the straight line. The straight line parallels the power of thought to instantly reverse itself. And that was the very essence of the process by which the Jewish People made it to Sinai in 49 days. The mere addition of the letter vav to a verb changes the future into the past and the past into the future.
Time is a creation.
To G-d, there is no past, present and future. G-d doesn't exist in time. He creates time. The vav tells us that the past is connected to future, the future to the past. It tells us that ultimately the past is the future and the future is the past.