The Daleks are coming and many high skill jobs are not safe

Every time I shop at my local Woolworths, I join the self-service checkout queue to pay for my shopping.

I don't need or want any social interaction (‘How's your day?') when I shop. I am happy to scan and pack my own shopping.

When I do this, I am indirectly undermining a cashier's job at Woolworths. A self-service machine can work for hours (days?) witho…