I agree with you in terms of implementation. But having used Windows 1 for a while and reading about Arthur/RISCOS at the time my impression was that the user e

I agree with you in terms of implementation. But having used Windows 1 for a while and reading about Arthur/RISCOS at the time my impression was that the user experience was similar. If I had been able to actually try RISCOS I might have had a different opinion. While Windows 1 tiles might have been due to wanting to avoid upsetting Apple (though in terms of APIs and resource management it was mostly a copy) there were those who preferred tiles like With's Oberon (which I also used at the time, along with GEM and Geos).