A state of knowing reached with no deliberation A product of the subconscious? Often improved with experience

There is one in a second, none in a minute, two in one hour, but none in half. What am I?

Bears the load of travellers Loses effectiveness at high ambient temperatures, Subject to high friction when in use Does not roll A simpler alternative to the above can be made from barn woods by the experienced

A question, a quandary, a quagmire of confusion. I beckon with promise, then twist the illusion. I speak without speaking, I'm seen yet unclear, You’ll chase me for ages - I won’t disappear. What am I, wrapped in riddle and doubt?

A man was born in the year nineteen forty eight and died twenty years later in the year nineteen twenty eight. How is this possible?