The other oddity in the reaction to Bayern's defeat has been the number of attacks on Guardiola and the assertion that tiki-taka is dead. In five seasons as a manager, Guardiola has won four league titles, two domestics cups (and is in another final), two Champions Leagues and three Club World Cups. Even given the dominance of the present era of superclubs, that is a phenomenal record. But the idea that tiki-taka is over, that Barcelona's defeat to Bayern last season and Bayern's defeat to Real Madrid somehow invalidate an entire philosophy, is to misunderstand the whole nature of tactics.
In tactics there are no absolute rights and there aren't many absolute wrongs: there is certainly no magic formula. Tactical theorists aren't like alchemists searching for the quintessence that will explain everything. There is evolution and development in tactical thinking, but everything is contingent on other factors; the same structuralist theory that underpinned Bakema teaches that nothing is not relative. Tiki-taka worked so well at Barcelona in part because of the technical ability of the players, in part because opponents were still adjusting to changes in the offside law and in part because of the intensity of their play. You can get away with a high line and passers rather than defenders in the back line only if there is ferocious pressure on the ball.
One of the reasons for Barcelona's slide from the very peak is that they have lost that intensity: stats from Whoscored.com show that Lionel Messi, for instance, has gone from retrieving possession through tackles or interceptions 2.1 times per league game in 2010-11 to 0.6 this season. Bayern were noticeably lacking in zip and zest in both legs against Real Madrid, perhaps because after such a glut of success over the past two seasons their hunger has been dulled, perhaps because they have won the league so easily this season that a certain edge has been lost and perhaps because Guardiola made tactical errors.
There are those who have argued that Bayern destroyed tiki-taka in the semi-final last season and that it was therefore an enormous error to try to implement it at Bayern this season. That, though, is to ignore the fact that Bayern last season were a highly proactive, possession-oriented side in pretty much every game other than those against Barcelona: domestically, only Barcelona had more possession in the top five leagues in Europe last season; only Barcelona had more possession in the Champions League group stages last season. In those semi-finals, Jupp Heynckes recognised that Barcelona were better at retaining possession and so set his side up to play reactively, with great success.
None of that means tiki-taka is finished as a system. None of that means teams will not continue to try to control games through possession. What does seem to be the case, though, is that the examples of Inter in 2010 and Chelsea, against both Barça and Bayern in 2012, has radicalised the approach of reactive teams when encountering tiki-taka, and that will probably prevent it ever again enjoying the pre-eminence it enjoyed at Barcelona between 2009 and 2011 – just as Total Football, or at least the version with an aggressively high defensive line, never quite dominated the club game again after the break-up of Ajax after the 1973 European Cup final. It was a specific way of playing for a specific set of players in a specific set of circumstances at a specific time. Its influence was profound, as that of Guardiola's Barcelona was and assuredly will continue to be. Whether that style will ever dominate in the same way again is another issue. Once the evolutionary wheel has turned, it rarely goes back.