I commend you for pointing out what they don't, or can't, see. I have all but given up countering the "I'm invincible" crowd. However, I'm very empathetic to the view point, I myself held it at one time - at one time.
To be clear: I definitely worry about my future at times, and I don't think I'm invincible. I intended to make a comparison with (especially) blue-collar work.
Because I do strongly believe that society favors the higher-educated, or at least those who are good at abstract thought, and I think it's very unlikely that this will change in the near future. And if it does, we're probably all pretty fucked.
That said, I'm not disagreeing with you (both). Just wanted to clarify my position.
