I was recently doing projections for up to five years for my business, and, of course, I realized that is it absolutely ridiculous because, I don’t know what will happen tomorrow, let alone 1825 days from now.
However, the exercise was useful in thinking through things.
The Prussian general and military strategist Clausewitz famously said:
No campaign plan survives first contact with the enemy.
More recently, the boxer Mike Tyson paraphrased him:
Everyone has a plan ‘till they get punched in the mouth.
So the idea here is that planning should make you aware of the challenges ahead. It is not about creating a rigid roadmap that you have to follow to the letter.