Sunday, April 9, 2017

Inconsistent ordering is worse than having no order at all

Look at this picture I took.where I have seen many accidents because of drivers passing the reldight. And I think I found the root cause of it.

You see a very wide street. If you zoom in, on all further intersections you see two traffic lights one on the right side and one above the driver. Except the first intersection which only has one traffic light on the right side.

One might accuse the lazy irresponsible driver for passing the red light and causing an accident. But I think the inconsistency in the traffic lights. And this intersection being an exception is the cause of all of the accidents I have noticed.

If none of the further intersections had a second traffic light above. The driver would not be relying on it.But if the driver can see 4 further traffic lights above his head for one mile but current intersection only has one traffic light on right side. Driver will be more likely be mistaken.

I am telling this story because its true real life story but also true in software development.
I have seen the same mistake in design and code. Whatever it is that you add as a nice to have feature, Make it consistent. Otherwise soon or later it will cause an accident.
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