Weight, what? tweets user on redefinition of kilogram

Reacting to a unanimous vote by scientists on Friday to redefine kilogram after nearly 130 years in terms of the Planck constant, a user tweeted, "Weight, what?" "How long did it take them to pound out this piece of legislation?" another user tweeted on the change. A user also tweeted, "This means nothing to most Americans. Kilo WHAT?"