I'm not sure if human beings are capable of reasoning about issues without taking positions on them. Without some sort of "bottom line" in our heads, brainstorming becomes very difficult. At least that's the case for me. So I don't think that the advice to avoid taking positions on ideas is helpful. I prefer the opposite approach: take many many many positions on ideas, have multiple sets of beliefs which you use to evaluate ideas with, even if those ideas have conflicts between them, and then weigh all the merits and disadvantages of the beliefs against each other. Committing to all ideas you can think of and committing to none of the ideas you can think of both avoid the problem of getting trapped in a flawed position, but I think the former is easier to do and lends itself better to creative thought and investigation, while the latter makes it difficult to cultivate curiosity.
Inspired by the call to rationalist poetry fans and informed by years of writing satire.
When you ask for truth and are offered illusion,
When senses deceive you and reasoning lies
I'll show you the path through the murky confusion,
Just follow and close your eyes.
On matters of fact there's no fact of the matter,
All moral and virtue are fashion and fad,
So dress in the creed that will fit you and flatter
No one can argue with that.
Some puzzles unyielding and mysteries ancient
No formula ever could hope to describe.
How proudly the scientist seeks explanations
How clearly in vain she strives.
Make cases like fortifications of metal,
No rival assertion shall ever go past.
Be carefree in choosing the side of the battle
But guard it until your last.
The sages declared that to know is to suffer,
Where wisdom is gained there is innocence lost
And learning is danger – best leave it to others,
Avoid it at any cost.
Some fools declare war on their very own nature
Their weapons are evidence, reason and math.
Don't offer compassion to those wretched creatures,
They've chosen the other path.