All these situations may have to do with what researchers say is a type of blindness ​ — not noticing something, or forgetting something, because of being otherwise engaged.
أَوْ قَدْ لَا يَجِدُ شَخْصٌ مَا مَفَاتِيحَهُ أَوْ نَظَّارَتَيْهِ مَعَ أَنَّهَا تَكُونُ عَلَى مَرْأًى مِنْ عَيْنَيْهِ .‏