Which brain are you using?

Which brain are you using?
I've heard an interesting estimate which part people use their brain,
the right or the left.
Let me give you an instruction how to tell it.
Hold your fingers both your right hand and left hand. Making your
palms touch and fingers are clinging each other. Then if your right
thumb is on the top, you are using your left brain. If your left thumb
is on the top, you are using your right brain.
The left brain is working for the languages or memory, such as reason.
The right brain is working for the inspiration or art, such as
instinct.
It shows which brain you use when you input something.
Next, hold your arms crossing. If your left arm on the right arm, you
are using the right brain. It means you are instinctive when you
output. If your right arm is on the left arm, you are using the left
brain reasonably when you output.

One person would be better use both brain when to input and output, it
needs balance to be good. What is your result?
Isn't is interesting?