Science so complicated one needs to use calculus most of the time to express concepts. From the "sigma" letter in calculus, the symbol that is used to express summation.
"Found" or fillerwork that is used to tide you over the last half hour or so before you leave your job for the day.
It's 3:30 now and I go home at 4, but there isn't enough time for me to scan those documents. So I'll ride this horse now and leave the scanning for tomorrow.