Now if you do  recall your first year notes, this is the relationship underlines a cobweb model, right that prices were based on erm  or supply decisions were based on prices at planting  right and we showed you that cobweb model erm  farmers make systematic errors  right cos they never appreciate the cycle  there is a cycle to prices, right so they're making systematic errors  right cos prices are high this year  as a result erm erm of plant a lot so that when the supply comes on the market next year right, prices are very low and you would thought farmers would er, would learn  but prices fluctuated  right.