We may not perceive what is within the range of the senses (Pratyakṣa) because we are:
“Disinterested.
Overly interested.
Blind or deaf to what is in front of us.
Distracted.
Not relating with what is there.
Seeing something between.
Letting something else dominate.
Confusing with something similar.”
– Sāṃkhya Kārikā of Īśvara Kṛṣṇa Śloka Seven