I agree too (who said "of course"?). [
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Always thought that with an ordinary assistant/chatbot, a 2D character can do the job. Hal is obviously very different and her/his sophisticated brain needs a sophisticated good-looking 3D avatar.
Some years ago, before discovering Haptek, I got a lot of fun from Oddcast characters (now we have things like CrazyTalk). They have lipsync and move eyes (they follow the mouse), and can be photorealistic. It's enough.
Nostalgia, nostalgia... Sorry, regressive post. [
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