Reading these comments about territorialism and control over environment has brought into focus why users are upset when an application or OS changes its UI, ev

Reading these comments about territorialism and control over environment has brought into focus why users are upset when an application or OS changes its UI, even slightly; it's not just that they have to relearn something, it's that their environment has been changed. Maybe they reluctantly accepted that in advance as a price worth paying to get new functionality or bug fixes or maybe the software auto-updated or the update was imposed by Tech Services and the change was unexpected. Same kind of thing with the recent discussions on here about software becoming obsolete and non-functional due to support being dropped (either because the OS won't run it, because r because the software depended on servers which have been shut down). This is another case of users losing control over their environment, and it's important to recognise the issue and the emotions involved, even if you don't relate yourself.