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We have just started logging errors. On this page, you will find information about all errors that persisted on the site for more than one month on any page.
|Page||Error description||Version where it was introduced||Version where it was corrected||Why error? Why not caught? ("I" refers to Vipul)|
|First-degree price discrimination||second-degree and third-degree price discrimination are interchanged||June 17, 2009||July 6, 2019|
|Price bundling||missed min operator on one term, and did not parenthesize an expression in the sum||September 11, 2016||Series of edits on October 29, 2016||didn't review table carefully enough|
|Pareto efficiency criterion||interchanged "better off" and "worse off"||August 30, 2011||February 28, 2012||carelessness, didn't visit page often|
|Effect of sales tax on social surplus||forgot "government surplus" in one equation at top, included in later analysis||November 30, 2012||carelessness|
|Effect of sales tax on market price and quantity traded||the justification for the claim that monopologies will never switch to a lower-price, higher-quality equilibrium was incorrect for the revenue-proportional case||September 18, 2016 (series of edits leading up to this)||March 15, 2017||The arguments were tricky and I made an error translating intuition to reasoning. The underlying intuition was in my head (and had previously been worked out on paper) but I ignored some of the subtleties when translating it.|