What an incredible round of Champions League football that was. And what do we have to thank for it? The away goals rule, that's what.
Okay, something as abstract as a rule clearly isn't going to be entirely responsible for producing the kind of roller coaster tie that Manchester City and Monaco laid on. Kylian Mbappe, Radamel Falcao, Sergio Aguero and Leroy Sane might have had something to do with it. But the much-maligned away goals rule certainly helped make the two legs what they were.
Perhaps disappointed at another English team exiting the competition, BT Sport presenter Gary Lineker went on the offensive, taking aim at one of football's easiest targets (with apologies to zonal marking, short corners and Michael Owen).
"I've never understood why one goal should be worth more than another", Lineker said after a 6-6 aggregate result saw City crash out.
He followed the television coverage with a couple of tweets, stating his views that "no goal should be of greater value than another" and that the away goals rule "kills so many games".
Criticism of the rule generally follows Lineker's template. Why should Monaco's three goals scored at the Etihad mean more than the three they scored at home this week?
Some contend that the rule makes home teams too cautious, particularly in first legs, left paralysed by the fear of conceding a potentially lethal away goal.
But this latest round of Champions League fixtures has utterly disproved such concerns.
Out of eight ties in the round, City's was the only one to be decided by away goals. Even in that match the rule enhanced the tie far more than it killed it.
In both legs the home side went for the win, racking up 12 goals in total, eight of them scored by the hosts.
Over the course of 180 minutes the lead changed hands six times, with Tiemoue Bakayoko's 77th minute goal on Wednesday night proving decisive.
The rule means ties can swing dramatically in favour of one team to the other after a single goal, the result of which is more exciting games. With Monaco 2-0 up (ahead on away goals with the scores level at 5-5), Pep Guardiola was forced to go for broke in the second half. The match opened up wonderfully and we saw City attack the game, giving us a far more entertaining match.
Leicester's historic triumph over Sevilla also benefitted from the away goals rule. When Wes Morgan put his side level at 2-2 and ahead on away goals, the Spaniards were forced to attack rather than engage in a game of low-risk chess. Leicester hit them on the counter and scored again.
Barcelona's unbelievable comeback against Paris Saint-Germain was made more difficult, and even more impressive, by the away goals rule, with Edinson Cavani's strike at the Nou Camp leaving Luis Enrique's side needing three goals in the final half hour to progress.
Had they needed two to take it to extra time, we would not have seen the grandstand finish and wild celebrations that Sergi Roberto's 95th minute goal brought.
This was the highest-scoring round of 16 the Champions League has ever seen, with an average of 3.88 goals per game. Only one tie saw fewer than five goals scored across two legs, while four brought eight or more goals.
The home team won six out of eight first legs, with four doing so by two or more goals.
Clearly, Mr Lineker, the argument that the away goals rule kills matches is misplaced. In fact, the Champions League is thriving as a result of it.
Goals are being scored more freely than ever before and Europe's elite competition is all the better for away goals counting double.
This is the only time that football ever mirrors sports like rugby or basketball where a single score counts for multiple points and the line between success and failure is so fine.
That might seem harsh at times but if it makes the ties more entertaining, what exactly is the problem?