Inertia

Here's my observation of the day (and yes, i stood and watched peope for about an hour doing this for no real reason other than to invent a hypothesis):
People will walk in straight lines as long as possible.
Let me explain:
There is a building, with walkways all round it (for those of you who go to UNSW, you will know this building as the Scientia). Now, it is required that one has to travel from one corner to the opposite corner. When people walk up, they walk straight until there is no path left, then turn and result at the desired destination.
When people walk down, they walk in a stright line, only on the path parallel to the one they traversed up, until there is no path, then turn and result back at the beginning.
This got me thinking.
Are people slaves to inertia?
Why dont they turn first, then go straight? Why the need to keep going along the initial path, until stopped?
Is this the case for other, metaphysical, metaphorical situations?

Does anyone in this world turn early, change their route when it is not required as yet?
I don't think they do.
I believe we are all at the mercy of inertia, and our initial momentum dictates the course of our lives.
Unless, of course, we hit a wall.