Fun fact: leaded fuel was known to be detrimental to health when introduced in 1924, but it was good for the bottom line so it was done anyway. It can still be

Fun fact: leaded fuel was known to be detrimental to health when introduced in 1924, but it was good for the bottom line so it was done anyway. It can still be said to follow the trend of introduction and then (much later) being discredited and remedied.