Answer:
Until I am measured I am not known, Yet how you miss me when I have flown.
Just head and foot yet never tires of dancing.
At the sound of me, one may dream or stamp their feet, At the sound of me, one may laugh or sometimes weep.
What is that over the head and under the hat?
I am believed to be only one dimensional, and tinier than anything can be, and there are many who say that I am the basis of all that we see. What am I?
A town has only two barbers. One of the barbers has a nice, tidy haircut, and the other has a shaggy, messy haircut. Which barber should you go to?