[He's just now getting the exact meaning of it. Yep. The initial thought was "crap they won't know who I am" - now the realization of "crap that means I'm a threat" has happened.
... He's a bit slow sometimes with this kind of thing.]
... Well. If I, myself, f-forget... then it will be the most t-terrifying thing that will have... happened to me, by... by that perspective...
...
... I suppose it is... prudent to, er, hope that does not h-happen...?
[Or hope that the notes survive intact at least. It'd be insanely implausible, but they might provide the family with a reason to not immediately suspect Robert of an attempt to sabotage.]
[Action]
... He's a bit slow sometimes with this kind of thing.]
... Well. If I, myself, f-forget... then it will be the most t-terrifying thing that will have... happened to me, by... by that perspective...
...
... I suppose it is... prudent to, er, hope that does not h-happen...?
[Or hope that the notes survive intact at least. It'd be insanely implausible, but they might provide the family with a reason to not immediately suspect Robert of an attempt to sabotage.]