📡 Bandwidth §

= theoretical measure of how much data can be transferred from source to destination (actual measure = 🕳 Throughput)

👨 Human bandwidth §

• ← Output: Speech 39 bits/s, writing 24 bit/s → writing is limiting
• → Input: Seeing < 6Mbit/s

Implications for HCI §

• Goal: system bandwidth >= human bandwidth
• How:
  • design UI for Input and Output Operations
  • maximize 🌟 Effectiveness