"Mokyr is an historical economist, not a historian and he refers to the causes of the famine, not the consequences. His argument is that Ireland's problems were not, as Malthus had propounded, due to overpopulation, but because of a reliance on the potato as a staple diet due to an economy developed under British rule."

You took one statement that the professor made and added two that you made from whole cloth.

Most important point is that Irish subsistance farming produced very little value or wealth for the country.

Several large cities like London, Belfast, Glasgow and Edenburg had industrialization that added great wealth to the society for the number of manhours worked.

The Irish were the ones who insisted in keeping their country rural, picturesque and largely free from major roads, indusrtraliazation and sewage treatment projects and even from modern farming techniques.

Their choices, not the Brits.