While introspection is a key aspect of the Buddhist method, observation of a person's behavior is also important.
In this view, the "self" is not a stable, enduring entity in control, but rather a mirage of the mind—not actually real, but merely seemingly so.
While that notion seems contrary to our own everyday experience, it actually describes the deconstruction of self that cognitive neuroscience finds as it dissects the mind (most famously, Marvin Minsky's "society of mind").
This psycho-physical process is further linked with psychological craving, manas (conceit) and ditthi (dogmas, views).
One of the most problematic views according to the Buddha, is the notion of a permanent and solid Self or 'pure ego'.
Therefore, perception for the Buddhists is not just based on the senses, but also on our desires, interests and concepts and hence it is in a way unrealistic and misleading.