You can see this out of videos where people train a NN to do something multiple times and each time, the NN picks up on something slightly different. Slight variances in what is fed as inputs during training can cause actually high variation in what is picked up on.
I’m getting decently annoyed with HNs constant pretending that this is all just “magic”.
Nobody is saying this is magic - it's just something that is (with our current level of knowledge) impossible to predict will happen. If you scale a model up, and/or give it more training data, then it'll usually get better at what it could already do, but it may also develop some new (emergent) capabilities that no-one had anticipated.
And that’s still beside the point that the properties that emerge can greatly differ just by changing the ordering of your training.
Again, we see this on NNs training to play games. The strategies that emerge are completely unexpected, and when you train a NN multiple times, often differ greatly, or slightly.
The “emergent” properties are going to be impacted by randomness of your starting point as well as ordering of your training.