just a little slower than "as fast as humanly possible".

Back in the olde days, thirty years ago, a jiffy was something like 10 msec. Those were the days when the computer was in an air-conditioned room with three white lab coated acolytes tending its every need, you could tell what turn around time was going to be by looking at the flashing lights on the front panel, and it took three days to get your Fortran program run back only to find out you'd left out a comma in line 375.