What are the Problems with using the Lewis Model?

-It can be hard to Transfer Labour to Industry. Workers migrating from the Countryside leave Fewer People to do agricultural labour, while at Harvest Time, there may be No Spare Workers at all -Investment in Education and Training needed to Develop the Human Capital for Expansion in Industrial Output -If Profits aren't Reinvested Locally, then well the Project breaks down (TNC?) -If Industrial Production is Capital Intensive, will it create many Jobs