::: Invariably math/physics types initially insist that it must be precisely 2 in order to make the integrals work nicely. But physical observation is what counts, and there is no logical obstacle to mathematical inelegance. Thanks for discussing this.--[[User:Aschlafly|Andy Schlafly]] 23:56, 1 October 2009 (EDT) | ::: Invariably math/physics types initially insist that it must be precisely 2 in order to make the integrals work nicely. But physical observation is what counts, and there is no logical obstacle to mathematical inelegance. Thanks for discussing this.--[[User:Aschlafly|Andy Schlafly]] 23:56, 1 October 2009 (EDT) |