Just because people shout "bubble" at any exponential growth phenomenon doesn't really mean we can tell when "the bubble bursts". Crashes in growth curves are always unpredictable. You can predict that there will be a crash, but telling when it's going to happen, that's the hard part....
Student loans look like they should be easier to predict than anything else. You can't see a bubble burst untill the inability to default is lifted. Until then, there is no defaulting, so there is no loss of confidence. The only metric to measure is how few payments people are making on their outstanding loans. For example, I only pay the minimum since I'm unemployed. I've drained around $300 of my savings just on mi…
If that realization happens too quickly for too many student loans, then there might be a sudden crash. Doesn't look like it yet though.