So, if we take a sensible approach,
trainers + sportswear = good
trainers + normal clothes = bad
It is, therefore, possible to express good in terms of bad.
good = bad + sportswear - normal clothes
The difference between good and bad is the difference between normal clothes and sportswear.
That should confuse you Christians. Make sure that you give it some thought on Sunday.
A crime
I have a pre-set notion that trainers have to be predominantly white. And, white trainers and long-trousers look terrible together. If you doubt this, just watch an episode of Top Gear. See?