20. Efficiency of Voice vs Text
• We type slower but read faster than speaking
• Text becomes more efficient as the group gets bigger
• Typing 20-60 Words Per Minute
• Speaking 160 WPM (Audio Books)
• Reading 250-300 WPM
• Listening up to 300 WPM
21. Efficiency of Voice vs Text
Source: Jacob Palme “Electronic Mail” Artech House Publishers 1995
22. Efficiency of Voice vs Text
Email Voice
Text becomes more efficient
when the group gets to
5 participants
23. Efficiency of Voice vs Text
Mobile Voice
Text
Mobile Text becomes more efficient
when the group gets to
9 participants
24. The Problems with Voice
It’s not just about efficiency
Increasingly viewed as
• Anti-Social
• Inefficient
25. The Problems with Phone Calls
• Interrupting
• Waiting
• Social Awkwardness
38. What people want
Lightweight interaction (not calls)
Groups (social segmentation)
Text,Voice, Pictures,Video, Location
Fast (progressive and low latency)
39. Messaging Apps
Innovation occurs at the edges
Tom Katis
CEO, Voxer
Copyright 2011 Voxer LLC