Jim Cramer thinks Palantir stock is cheap, but I think his reasoning has some flaws. Shares of data analytics powerhouse Palantir Technologies (PLTR -2.27%) soared by 141% this year. For two years running, Palantir is the top-performing stock in the S&P 500, and its momentum doesn't appear to be diminishing in the slightest. Following the company's blowout second quarter earnings report, CNBC investment personality Jim Cramer shared his thoughts on Palantir -- even going so far as to call the stock "ridicul ...