Two is such a cool number. Many things usually come in sets of two, eyes, ears, arms, legs, parents, all very useful to have working together to accomplish a task.
The sort of pairing can be seen aboard ships, pairs of things or places or ideas to make the ship able to accomplish its tasks, port and starboard, forward and aft…… the list goes on and on. One of the major differences that I found between Canadian warships and US warships of the same size was that the US ships generally only had 1 propeller to drive the ship forward while our ships all had 2. Having that second propellor was a beautiful thing, not only did we have a “spare” but if you had some skill, you were able to make your ship do the hokey pokey if you so desired.
John Looks Out On Life 