Also nach dem, was ich so früher gelesen hatte, scheint die Geschichte, wie sie immer erzählt wird (alles von Xerox geklaut) nicht zu stimmen. Dazu gab es von damaligen Beteiligten auch Aussagen im Netz und Büchern, die sich genau gegen diese Behauptung wehren (sofern die stimmen).
Vor 10 Jahren oder so hatte ich mal versucht dazu einiges rauszufinden. Die Quellen finde ich nicht mehr alle und manche Seiten scheinen auch mittlerweile down zu sein.
z.B.
"This "fact" is reported over and over, by people who don't know better (and also by people who should!). Unfortunately, it just isn't true - there are some similarities between the Apple interface and the various interfaces on Xerox systems, but the differences are substantial. ..."
https://www.folklore.org/StoryView.py?project=Macintosh&story=On_Xerox,_Apple_and_Progress.txt&topic=Software%20Design&sortOrder=Sort%20by%20Date
Jef Raskin:
"Many didn't speak with me: without knowing that I had worked out many of the key usability ideas when Jobs was still in grade school and before there was a Xerox PARC to learn from, it is perhaps understandable that people would find it necessary to invent a history that derives the Mac's genesis from the nearest similar work. The honest intellectual debt the Mac owes to the work at PARC was not a case of highway robbery."
"For one thing the usual account (as in Levy's book, "Insanely Great" and others) denigrates the original and creative work done by all the Apple employees that put their hearts into the Mac."
https://apple-history.com/gui_raskin2
"It's not surprising, since Microsoft saw quite a bit of the Macintosh design (API's,sample code, etc.) during the Mac's development from 1981 to 1984; the intention was to help them write applications for the Mac, and it also gave their system designers a template from which to design Windows. In contrast, the Mac and Lisa designers had to invent their own architectures. Of course, there were some ex- Xerox people in the Lisa and Mac groups, but the design point for these machines was so different that we didn't leverage our knowledge of the Xerox systems as much as some people think."
https://www.folklore.org/StoryView.py?project=Macintosh&story=On_Xerox,_Apple_and_Progress.txt&topic=Software%20Design&sortOrder=Sort%20by%20Date
"
It was not, as many accounts anachronistically relate, stolen from PARC by Steve Jobs after he saw the Alto running SmallTalk on a visit. For one thing the usual account (as in Levy's book, "Insanely Great" and others) denigrates the original and creative work done by all the Apple employees that put their hearts into the Mac."
"I had observed at PARC, in myself and others, that the three-button mouse was confusing. And I said, "What would be the way of making it so there would never be any question about what button to press?" If there's only one button, you can't make any mistakes. So I said, "Let's make a mouse with one button." But the first thing is, how can you do all the things? You have to use a few buttons to do everything on the PARC machine.
So I designed the method of using a one-button mouse, and so invented a lot of methods that are still in use, like click and drag for selecting a region, and for dragging things across the screen."
"without knowing that I had worked out many of the key usability ideas when Jobs was still in grade school and before there was a Xerox PARC to learn from, it is perhaps understandable that people would find it necessary to invent a history that derives the Mac's genesis from the nearest similar work. The honest intellectual debt the Mac owes to the work at PARC was not a case of highway robbery."
https://books.google.de/books?id=D39vjmLfO3kC&printsec=frontcover&dq=The+Human+INterface+%2B+raskin&hl=de&ei=LrehTsiJG83bsgbwg9jvAg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDEQ6AEwAA#v=onepage&q=The%20Human%20INterface%20%2B%20raskin&f=false