Right what we're going to do is to introduce the idea of expectations  right, cos what this equation's really saying  right  is that farmers expect  price prevailing in T minus one  alright  to  prevails in S T  right so that's what we're , right, in  their ex their expectation of prices in T, right  are based on er current prices in sort of T minus one  okay and that, that is what we would call erm   expectations  alright.