Possible incorrect word use
In the Tutorial "Corporations are People" there is a possible typo where one word is used, when another may be more correct.
Upon building the Pleasure Dome at the end of the tutorial, the guide pops up and says the following:
You really know how to make the best of a good idea. By.......//.....you've insured optimal profits."
The word ensure, fits in there rather than insured. As you've made sure that there are optimal profits. Rather than to secure or protect against misfortune.