[Pharo-users] Capturing messages

Hello, I would like to intercept all messages sent in the system, as part of a small project to investigate if the information can be used in useful ways (autocompletion, object compatibility detection, etc). It will also involve filtering, aggregating and enabling/disabling it for space and time conservation, I'm new to Pharo, but had some success by changing the main perform (perform:withArguments: IIRC) method in Object, and making others use it instead of the primitives. Someone told me it doesn't capture most messages because of optimizations done by the system. My other thought was to use the profiler's spyOn as an approximation. What do you think? Thanks in Advance, Alejandro