On researching the topic it appears that ancint Chinese sources including Confucius recommended head facing north with feet to the south while sleeping. An ancient Indian source Vastu recommends the opposite.
Some believe that Vastu may have been giving advice that is opposite of truth to the masses, reserving true information for the king. The idea was to keep the masses supressed.
According to some sleeping with head towards south and feet towards north leads a person to become lethargic and corrupt, conditions which lead to general poverty and disorder in society. This is because south has been regarded as the direction of the demon and north that of the Gods in mythology.
Some answer this based on polarity of earths magnetic field but thaat does not lead to an answer. Both positions have their own advantages
Due to the contradiction in various sources it is not possible to give a final answer yet. It may be possible that the best direction is different for each individual or that other things such as placement of bed with respect to bedroom walls, doors and windows is more important. It is best to experiment and find on one's own. For me the best direction has been with head to south and feet towards north. Sleeping with head to East led to nervousness and fear.
Yes, it is possible for one person to point another person in the right direction, especially if they both understand the correct destination.
An umpire should point in the direction that the team is going that has been awarded the free hit.
Arrows point in the direction of airflow.
Yes, it is possible for someone to point another person in the wrong direction. There may be different places with the same or similar names. There may be a misunderstanding about where you want to go. Or the person may just point you in some direction, maybe because they don't know for sure or they just want you to stop asking them for directions.
Eagle should always point north
Because that is what it is, no point in getting married if you intend sleeping aroung
http://www.aicpa.org/index.htm this link should help point you in the right direction.
in most cases it points to the camshaft
the needle should point north unless your are close to another magnetic object which could interrupt it.
Down current.
Turn your wheels to the left.
i think its up