Apply Norvig's Law when evaluating growth claims about technology adoption, market size projections, "exponential growth" narratives, or headlines claiming a technology will "double" its reach when it's already dominant. Trigger on phrases like "X is growing exponentially", "this will double in the next year", "the market will 2x", or any context where someone is applying growth rate assumptions to a technology that already has significant penetration. Also useful when evaluating numeracy in tech journalism and analyst reports.