Areas of the cortex located just behind the temples containing the neurons responsible for the sense of hearing and meaningful speech. Frontal Lobes Areas of the cortex located in the front and top of the brain, responsible for higher mental processes and decision making as well as the production of fluent speech.
As a practical matter, some might argue, if a filibuster is threatened and it takes 60 votes to end debate in the Senate, then it does take 60 votes to pass a bill. Nothing in the Constitution says that a three-fifths majority is necessary to pass ordinary legislation.
A bill can be introduced, read on first reading, heard in committee, and then passed on second reading in the same (busy) day. This means it takes a minimum of two days for a bill to pass either the House or the Senate. This two-day minimum per house means that the minimum number of days for a bill to pass is three.