Decisions Without Estimates?

Check out Decisions Without Estimates? by Glen B. Alleman. Here is an excerpt:

There is a posted question at an agile conference. Can you make a decision without an estimate? Like many discussions in the domain of agile, the statement is made without any evidence that it is true, nor can even be true in principle. This type of fallacy is common. 

First a principle…

The full article is available here.