I get goosebumps watching people see the late Bill Atkinson first demo his MacPaint creation 40+ years ago to the public and answer questions. Today, you couldn't imagine it being new. In hindsight, that was an historic moment. Now, sadly, he's gone. Watch it and imagine how it must have felt.

Here’s Bill Atkinson (and rest of team) answering questions right after the Macintosh was debuted at the Boston Computer Society in 1984: https://www.youtube.com/watch?v=1tQ5XwvjPmA starting at 28:25 - he demos MacPaint and more. May his memory be a blessing!