WAH - (What Happened Here) - Is a project that allows developer to figure what's going on with an application during runtime. For example, if an application crash, we wanted to find out why.
Unfortunately most of the it time, we ask did you enable logging, read through the logs and find out its root cost and finally cross check that with source code. This takes up alot of time
Instead of using the traditional logging, it allows developer for ask the app what actually happened and why it crash. Yeap, something like interrogation - but with more intelligent way.