Ciro Santilli @cirosantilli 37

The growing number of parameters of the Standard Model is one big source of worry for early 21st century physics, much like the growing number of particles was a worry in the beginning of the 20th (but that one was solved by 2020).

List: en.wikipedia.org/w/index.php?title=Standard_Model&oldid=1042518939#Construction_of_the_Standard_Model_Lagrangian