The Context

The Context - Part of strategy is considering your decisions with in the greater context. First step is identifying what the primary objective is, absent of setting proper expectations of what the objective is to be,  the context becomes difficult if not impossible to define.

This reminds me of racing sailboats. You have a greater context which is the course itself. Your objective is to get around the course faster than your competition (no confusion as to what the primary objective is).
However, your selected path for doing so and the multi-layer decisions that go into that, operate in a constant state of flux/change. The best course to take can never be defined fully in advance as there are to many consistently changing variables acting simultaneously for this to be possible.

How does one make proper decision on strategy and direction amongst variables that are in a constant state of flux?

First control what you can control.

As it pertains to sailing, first, you have to make sure your boat is set up properly for the conditions on any given point of sail (if you change course you need to adjust the sails for optimal speed per that course) in this you are constantly adjusting the sails and trim for course and weather (weather being semi unpredictable) (wind/waves).

Next, your sailing against your competition who is also making independent decisions in real-time that should have a direct impact on your decisions. If the competition is all of a sudden doing "this" then you must do "that". Which the decision to purse "that" did not exist until your competition made their move and/or changing elements uncovered a particular advantage for you to pursue "this".

The ultimate goal is to beat your competition which trumps simply sailing the course but the course is the context to which all competitors are confined. Being confined to the context of the course with the goal to  get your boat going fast, fast around the course and ahead of your competition.

Control what you can control and screen decision's through the greater context allows one to make better (not the best, which can't be known without the benefit of hindsight), decisions in real-time, in a constant state of flux, towards an ultimate defined objective (goal/primary aim)...Win the race.

What is your objective, what is the context, what can you control?