For the human thinking mind there are always many sides to everything and it decides according to its own bent or preference or its habitual ideas or some reason that presents itself to the intellect as the best. It gets the real truth only when something else puts a higher light into it — when the psychic or the intuition touches it and makes it feel or see.
It is very usual for intuitive suggestions to come like that and the mind to disregard them. It is because the mind is too accustomed to follow its own process and cannot recognise or have confidence in the intuition when it comes. The mind has to learn to look at these things when they come and give them value if experience confirms their truth.
Yes, the active mind in people with a very intellectual turn can be an obstacle to the deeper more silent spiritual movement. Afterwards when it is turned into the higher thought (intuitive or overmental) it becomes on the contrary a great force.
The intuitive perception or discrimination is self-sufficient — it does not need any reasoning or process of thought to justify it. The intellectual depends on data and steps, even if the steps are hurried over or the data rapidly seized and swallowed into the intelligence.
It [the perception of an intuitivised mind] is when, instead of seeing things as they appear to the external mind and senses, one begins to see things about them with a subtler physical mind and sense — e.g. seeing intuitively what is to be done, how to do it, what the object (even so-called inanimate objects) wants or needs, what is likely to happen next (or sometimes sure to happen), what forces are at play on the physical plane etc. etc.
Even the body becomes intuitively conscious in this way, feels without being told by the mind what it has to do, what it has to avoid, what is near it or coming to it (though unseen) etc. etc.
The heart has its intuitions as well as the mind and these are as true as any mental perceptions. But neither all feelings nor all mental perceptions nor all rational conclusions can be true.
Sri Aurobindo, Letters on Yoga, Vol. IV