Talk:Marginal rate of technical substitution

Productivity?
The MRTS is the absolute value of the slope of the isoquant at a given point. How can there be a positive/negative MRTS as an indicator of productivity changes? --Srwm4 22:23, 15 November 2006 (UTC)

The sentence you mentioned was nonsense -- I have removed it and tried to explain the MRTS in a better (and correct) way. -- arnehe 14:30, 7 February 2007 (CET) by aso4love37 and ericmsughter