It is hard to find anyone who takes a dispassionate view of conversion to SI (abbreviation for "Le Systeme Internaional d'Unites" or International System of Units). When the General Conference on Weights and Measures met in Paris in 1960 it was for the purpose of adopting standards that would have worldwide support because virtually the whole world would have reached consensus on them. But the decisions made have led to a "my term is better than your term" controversy. There are advantages and disadvantages to any attempt at systematizing. And the greater the number of systems involved, the more controversial is the conversion to one universal system. Part of the problem, possibly the greater part, is that change is always uncomfortable. It slows down operations that are otherwise performed automatically. The disadvantages in SI are: lack of understanding of how it works; the fact that in many countries it is getting more lip service than real implementation; and the lack of enthusiasm of some segments of the scientific and technical community. There are many advantages to SI. The most obvious is that it can become a universal language of measurement. Already it is the only legal system in France, Canada, England, and many other western nations. As it sweeps before it the various metric systems now in use, it will help make pure and applied science more understandable and less of a boogeyman to the nontechnical public. But just as it took time to cycle from the slide rule to the giant computer and then back to the more generally usable desk computer and hand calculators, it will take time to absorb, adopt and bring SI down to everyday usage.