In the 18th century James Hargreaves invented the Spinning Jenny and Richard Arkwright pioneered the water-propelled spinning frame which led to the mass production of cotton. This was truly revolutionary. The cotton manufacturers created a whole new class of people - the urban proletariat. The structure of society itself would never be the same.
Improvisation is almost like the retarded cousin in the comedy world. We've been trying forever to get improvisation on TV. It's just like stand-up. It's best when it's just left alone. It doesn't translate always on TV. It's best live.