Eisenhower on planning

Dwight D. Eisenhower said:

Plans are nothing; planning is everything

or, to paraphrase in the modern vernacular:

Planning is important, plans not so much.

In the software world a lot of time is spent making plans, which are carefully written down and stored safely. After that they are not often referred to. Pretty soon circumstances have changed and a new plan is required. So I agree with Ike.