sentences:  Originally, a single strip would have represented approximately a single day of ploughing; such a strip today would be far too small to be really practical for a tractor-drawn plough.Instead, over time, strips have been consolidated to provide workable parcels of land; the result today is that the average strip size has increased significantly over mediaeval times.However, the practical aspects of open field farming are still very much what they would have been 500 years ago.