You make observations, write theories to fit them, try experiments to disprove the theories and, if you can't, you've got something.

Mullis earned a Bachelor of Science degree in chemistry from the Georgia Institute of Technology in Atlanta in 1966 during which time he got married and started a business. Accreditation of the PCR technique
A concept similar to that of PCR had been described before Mullis' work. All humans are.

He has promoted AIDS denialismclimate change denial and his belief in astrology. [scientific citation needed] The improvements made by Mullis allowed PCR to become a central technique in biochemistry and molecular biology described by The New York Times as "highly original and significant virtually dividing biology into the two epochs of before P. R.