This is a personal project by @dellsystem. I built this to help me retain information from the books I'm reading.
Source code on GitHub (MIT license).
(verb) to make faulty or defective; impair / (verb) to debase in moral or aesthetic status / (verb) to make ineffective
This was not Marx’s meaning, in his own historical writing, yet the error vitiates much latter-day ‘Marxist’ writing