"On a whiteboard, Ozzie has jotted down a long checklist of emotions easily conveyed by voice, but difficult to decipher in quickly thumbed-out bursts of text: concern, pain, urgency, empathy, clarity, seriousness, confidence, anxiety, trust, strength, accountability, anger, fear, stress, confusion, doubt…"

Isn't this why we don't use voice? Voice is so rich and emotionally expensive. note: I haven't tried the product but I guess I am always a bit skeptical of voice products.