Pretty Amazing Grace
Last Monday, Google honoured Rear-Admiral Grace Hopper with a Google Doodle. This is the woman one of whose many achievements was to create the COBOL programming language, in the use of which I spent much of my professional IT career.
Here she is on Letterman a few years ago:
She coined the term "bug" for a computer fault. She also (as shown on Letterman) had a nice line in visual aids for how short a nanosecond is. Here's the bug:
And here is a bundle of nanoseconds:
She's dead now, but - thank you, Grace.