What is memory protection and why is it so hard to implement for the AmigaOS?

[kolla]

I'd argue, that as a single-user computer, MP on the Amiga hasn't been missed by the users.

Nonsense, many users left Amiga due to lack of MP when Internet became "the thing" to do with computers in early/mid 90ies - the lack of MP was also a major reason why Amiga users went on to create Linux and NetBSD for Amiga computers back then.

And as for abusing Amigas online, I know that _I_ have "broken" into remote Amigas that due to malconfiguration and lack of MP meant a lot of fun for me, and maybe not so much fun for someone else.  The highlight was to dump prefs files into remote ENV: and watch the confused target rave about his problems on IRC :laughing:

[kolla]

You can sandbox and make it work. Somehow.

There are two problems with this:
1. You end up with 1% New World apps, and 99% Old World apps. Doesn't really change much if you mostly use an Old World app? Could get real fast reboots though.
2. There is no echosystem to shift the 1 - 99 balance. (That is what Windows and Apple had. And a firm whip.)

If I understand things right, this is what MorphOS did with abox, and look what happened - abox is all there is, and little has changed.

[kolla]

Just what the world needs, an OS that behaves like facebook :lol: