. An increase in the initial stock of lumw;ledge: Suppose we have two economieslet's call them Earth and Marsthat are identical, except that one begins with a stock of ideas EEarth 2 x A Mars that is twice as large as the other: 0 0 The two economies are so far apart that they don't share ideas, and each evolves as a separate Romer economy. On a single graph (with a ratio scale), plot the behavior of per capita GDP on Earth and Mars over time. What is the effect of starting out with more knowledge