When people are colour blind, they cannot distinguish between certain colours, especially red and green. Bus drivers, taxi drivers, pilots are dangerous jobs if you are colour blind as you can't differentiate green light and red lights and might crash into something. Being a member of anti-bomb squad is also dangerous as you can't differentiate the wires and when you cut the wrong one the bomb might explode. Furthermore, some types of engineering are unsuitable as you might put the wrong wire in the wrong plug which may cause a short circuit and a fire may break out.
Recommendation to test whether if you are colour blind:
http://www.toledo-bend.com/colorblind/Ishihara.asp is a fast and simple way to test if you are colour-blind. It only takes about a few seconds. The test is just to see a number in the pattern of dots. Best of all, it is completely free! Try it now!
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