Source--Software Estimation in Agile

ref: https://www.toptal.com/agile/software-costs-estimation-in-agile-project-management

This is an intersting post by Toptal which states with this picture that Agile is about timeboxing things. Which is interesting, I guess it is at a small level.

Also weirdly enough they also suggest a preposal... smells like a pitch doesn't it?