Weaving his personal journey with his revelations about Chinese education, Gardner plows new ground for thinking about and fostering creativity.
They also use horse drawn plows to cultivate their fields for farming.
Keep to main roads and only drive after snow plows and sanders have done their job.
If you look back across the span of time, you see wood plows being used in 4000 BC, then irrigation five hundred years later.
The chief thing in his eyes was not the nitrogen in the soil, nor the oxygen in the air, nor manures, nor special plows, but that most important agent by which nitrogen, oxygen, manure, and plow were made effective-- the peasant laborer.