[sirsinsalot]

I've worked with people "set in their ways", and while I am empathic towards the human causes of this, it does disrupt work.

On-boarding someone who becomes visibly angry with processes, tools and approaches they're not familiar with due to nothing but stubbornness and fear, is difficult.

I also made the distinction between this and ignoring rubbish trends as a specific point.

As I said, this trait isn't causally linked with age, it is correlated in my experience. This is why, all of us, must ensure we stay plastic as we age.