you're not stuck in the 'you can't do that!' rut!
I've always thought that those who are unwilling to adapt or expand are the ones with something wrong with them... I have a lot of self taught behaviors that are incredibly useful in everyday life to the point where I worked a job that involved things I'd taught myself as opposed to what I do naturally for a few years with success... to stop learning and adapting... you might as well lock yourself in a box
I could quote a lot of your posts in this thread, but this one stuck out the most.
All I have to say is I agree....a lot. I find there is a peculiar condition of humanity that, if we lose perspective of other perspectives, we become locked into this horrible notion of rigid correctness that dictates set blocks of understanding and static approaches to all situations.
Time and again this approach is proven to cause much more damage to ourselves than benefit, yet we keep falling into the trap, I am not innocent myself. I've noticed it tends to stem from...perhaps, a certain laziness of mind where someone will happily assume a generalisaion because it is easier for them to comprehend than to try and understand a more myriad consideration of multiple angles.
I understand this notion, it's the urge that hits me a great deal of the time when I do not fully understand what it is I'm presented with. But over time I have learnt that this is the little tell-tale sign for personal growth and learning. Similar to your point, I find that when an individual backs down from this challenge to their comfort zone of assumptions; it is like being trapped inside a box into which nothing else can penetrate.
MBTI in particular presents us with a good example of what this can be like in individuals who refuse to take a new approach to a familiar theory. Of course I acknowledge that any idea must prove it's logical merits, but sometimes these ideas are shot down long before they even get a chance to step onto the runway known as 'decent guess' let alone 'logically sound'.
I hope I can guard myself against this trap, especially as I grow older and the elasticity of my brain becomes less.