You can check out some more of Henley's work on his blog here. Recent pieces include: 

• A theory of how developers seek information
• All my career rejections
• Navigate your code like it's 2021
• Why is it so hard to see code from 5 minutes ago?
• An inquisitive code editor: Overcome bugs before you know you have them

How much time does the average developer spend typing in their editor versus researching, exploring, and pondering? Henley believes half an hour of inputting actual code a day is realistic, despite what you've heard about the 10X developer in your area.