Taleb elaborates on this idea quite a bit. Opinions are irrelevant, what matters is your position. Opinions are useless without a downside. For example, don't

Taleb elaborates on this idea quite a bit. Opinions are irrelevant, what matters is your position. Opinions are useless without a downside. For example, don't tell me that you think Microsoft is a good or bad company. Tell me how many shares of Microsoft you own or how you're shorting Microsoft.