Grace Hopper. This should so be higher up. Without Grace, programming would have been reserved for scientists only. We probably wouldn't have most of what we have today in regards to software and the advantages we enjoyed because of that.
She was a Motherf**king Legend.
She had a masters in maths in a time when a lot of Universities still didn't allow women to attend.
On her very first Job with a computer, she asked for a manual. They told her there isn't one. A few months later she had written one.
When she suggested the idea of a compiler - a way to write more English like statements to make the whole programming thing easier, faster and more accessible to the masses - she was told not to do it. Scientists firstly didn't believe it could be done, and secondly didn't want it to be done because they were more interested in protecting their "elite" career of programming.
She did it anyway.
Going to Latin America. quick, put the yellow filter!.
TIL: Nirvana played a concert in Beunos Aires where the crowd threw mud and trash at the all-girl opening act. Kurt Cobain was so upset that he sabotaged the show by playing mostly lesser known songs and teasing 'Smells Like Teen Spirit' without ever playing it.
TIL of Dr. Donald Hopkins. He helped eradicate Smallpox, and is on the verge of killing another disease. He's taken Guinea Worm Disease down from 3.5 million cases a year to just 28 cases last year.