"Dimensions and units: We designed a way to write such expressions as "2 meters per second" and "15.7 kg" and have them fit smoothly into the rest of the type

"Dimensions and units: We designed a way to write such expressions as "2 meters per second" and "15.7 kg" and have them fit smoothly into the rest of the type system and mathematical syntax—still a good idea that has yet to reach fruition."