Question about clock??

[dannydufflebags]

This may seem like a dingbat question, but I am doing qtr length research for our upcoming franchise, and I wanted to know what the was the accel clock even devised for? I guess I am asking what the advantages are to it? Trying to decide whether to have it on or off. Somebody mentioned that all it does is rush you, which is true in some fashion, but it was obviously put there for a good reason, trying to figure out what that reason is.