This read much more like an advertisement for GreaterThanZero's services than an article whose conclusion actually addresses the title's question, but the autho

This read much more like an advertisement for GreaterThanZero's services than an article whose conclusion actually addresses the title's question, but the author seemed to do a good job accounting for the differences between Warren Buffet's estate and a regular, living person's money (namely that the person sometimes needs to spend it). Actually, come to think of it, I don't think the author explained why Buffet's estate should be treated as if withdrawals will never be made from it, but I assume it's because the 10% of his money that will go into short term savings bonds is still a ridiculous amount of money and should be sufficient to cover any expenses in the foreseeable future.