I've worked in facilities management for 13 years. In all that time, toolbox talks were done one of two ways: a PowerPoint, or a piece of paper handed over to sign to say you'd watched or read it.
Nobody engaged with it. People didn't really pay attention, didn't read the paper copy — they just signed it. A tick-box exercise.
Sites are full of folders stuffed with toolbox talks and signatures. But who knows if any of them were actually read, let alone understood?
We're such a diverse workforce now. What one person understands, another may not — because of language, or because of culture. A signature doesn't tell you either way.