Answer:
True
Step-by-step explanation:
Keynesian economics is a complex and evolving field of study, and there is debate among economists about the accuracy and usefulness of textbook models that attempt to summarize Keynes's ideas. Some economists argue that these models oversimplify Keynesian theory and ignore important nuances and subtleties, leading to misguided policy prescriptions.
Therefore, the statement "the textbook models of Keynes’s ideas lose important elements of his thinking and thus should not be used to guide policy" is generally true, although it is important to note that there are varying opinions on the matter among economists.