There is only one watch, you can know that there are two or more watches, but you can't determine it is a few points; the two watches can't tell someone more accurate time, but will let the people who look at the table to accurately Time confidence.
For a company, two different management methods cannot be used at the same time, and it is not possible to simultaneously set two different goals, otherwise it will make this company to be at a loss; a person cannot commanded two or more people, otherwise it will make this person will not be conscious; At the same time, choose two different values, otherwise his behavior will be confusing.
