My last tech talk was an absolute train wreck - barely got there on time, only got to rehearse driving 4 hours there, had to redo my slides from scratch when I got there (leaving a typo in my company name and two major points missing, only one of which I caught while presenting) - but it was still very well received (save for the one guy who closed his laptop, put it in his bag, and walked out, when I said, "If you're looking for code samples, you've come to the wrong place. This is a philosophical/architectural talk").
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My last tech talk was an absolute train wreck - barely got there on time, only got to rehearse driving 4 hours there, had to redo my slides from scratch when I got there (leaving a typo in my company name and two major points missing, only one of which I caught while presenting) - but it was still very well received (save for the one guy who closed his laptop, put it in his bag, and walked out, when I said, "If you're looking for code samples, you've come to the wrong place. This is a philosophical/architectural talk").