don’t think many people realize that. like. even AAC user who have most control over motor skill, who type fastest, who have no other cognitive symptom that make hard think, no other communication issue, still communicate a lot slower than average speaking person.
and AAC users who are like that. very very rare.
AAC. even if type very very fast. still slower than average speech. or at least less spontaneous, more intentional, more purposeful, very rarely can do equivalent of “say whatever think without plan ahead, speak fast than think, speak without think.”
so AAC disadvantage when during emergency, urgent times. or even just time sensitive situation. for example one hour doctor appointment, on very good motor day and i type both hands fast (rare), still probably only get at most half of what average speaking person amount say.
and even then. able give less detail, short sentence short phrase, because long full detail take so much long.