Mum commented on loads of things this weekend...
ds is nearly 4, and pretty sensible. Would you let a 4yo walk ahead of you on the pavement? And occasionally walk ahead, round a corner and out of sight for a second?
Would you sit a 4yo in the back seat of the bus, right in the middle? Mum reckons he could fall off and fly right down the aisle.
There were lots of other things as well, but I think she was totally wrong about them, just not sure about these two.