Much of the effectiveness of thinking may be wasted if there is no definite conclusion at the end.
The conclusion may not be the one intended but it can still be definite, e.g., 'We are unable to solve this problem" is a definite conclusion.
Ask the question:
What is the conclusion?
There are several types of conclusions.
Some of them are given here:
ideal: - one or more ideas on the matter or a new way of looking at things
picture: - an exploration of the matter