There was a time when we could just enjoy exciting goalmouth action for what it is.
We could revel in the fact that we could barely breathe without a shot or a half-chance.
But then people tried telling us about a little thing called defending, and suggested frantic games with goal after goal meant the back-lines weren't doing their jobs.
And, on a night where two last-16 games produced a combined 14 goals, you just knew what was going to follow.
https://twitter.com/J01kez/status/834154417016414209
https://twitter.com/danielstorey85/status/834148014138785792
He may have scored at the right end, but John Stones bore the brunt of the defensive criticism.
https://twitter.com/Priya8Ramesh/status/834147425333936130
https://twitter.com/_Zeets/status/834146982713257984
But Leverkusen's defenders weren't immune from it either.
https://twitter.com/archiert1/status/834135319867953152
https://twitter.com/honigstein/status/834133359219580929
But wait, maybe abolishing defending might be - wait for it - a good thing?
https://twitter.com/SBNationSoccer/status/834147963744169985
https://twitter.com/luke_strauss/status/834151391031599105
At the very least it makes for greater entertainment.
https://twitter.com/ThatDamnYank/status/834149739109036032
There, it's settled. Caring about defending is bad, watching an absence of defending and enjoying whatever ensues is now good once more.
https://twitter.com/genepoli/status/834151328876228608
https://twitter.com/Ankaman616/status/834151887662350338
https://twitter.com/sewadyllo/status/834153993916014592
What odds on goalless draws in Monaco and Madrid in the return legs? No, you're right, these teams couldn't do that if they tried.
Catch up with this week's episode of 888sport Football Friday Live
