Has this ever happened to you?  You see an error in a document or on a drawing and attempt to fix it, only to introduce a new error.  Come on, everyone’s done it before.  But I had no idea until recently there’s a name for this phenomenon: Muphry’s Law.

Notice this is not the same as Murphy’s Law.  Murphy’s Law says that if anything can go wrong, it will.  Muphry’s Law on the other hand basically says if you try to correct someone else’s error, you will make an error yourself.  Or, in other words, it’s easier to see mistakes made by others than it is to see your own mistakes.

This is based on a Biblical concept.  Matthew 7:5 says You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother’s eye.

Source: Muphry’s Law