Does one watch oneself in this scenario?
belatedly repeating what every one else says - yes in the early stages you know exactly what was happening. And quite often you go on knowing you are missing something until you forget how to speak. And even then a friend told me how her mother would try to speak even after she know longer could, and got frustrated at that. Even when she had forgotten how to communicate she knew she should be able to communicate. And yeah, no one deserves it but Pratchett especially does not. It is not a quick loss; you lose yourself a bit at a time, and are aware of it through much of it - maybe most of it.