> And you likely shouldn’t be talking at all without preparation when speaking to, say, 100 or more I'm probably saying what you mean but preparation should me

> And you likely shouldn’t be talking at all without preparation when speaking to, say, 100 or more I'm probably saying what you mean but preparation should mean (or include) practice. That is, if you're speaking to 100+ people, it better not be the first time anyone has heard your speech in its entirety. (source: once bombed a conference talk thinking I could "just wing it").