I don’t know how my digestion works, I don’t know the names of clouds, I don’t know how planes fly, I don’t know how (or why) my hair is turning gray, I don’t know why birds make formations at certain times and not others, I don’t know how most mechanical or electronic things work, I don’t know how acorns become trees. The number of things I don’t know are endless. – Sebene Selassie