[Osmium]

1. Your mind is also part of the world. Changing your perceptions is changing part of the world.

2. All human minds are only capable of perceiving a small fraction of the total information content of the world, and most of our perceptions are based on constructed social realities (e.g., as this is a tech forum, you could say we live in a virtual machine where small rectangles of woven fiber are given a meaning far beyond the mere fact of their existence, purely based upon our collective perceptions of what those rectangles represent). Changing our perceptions can therefore change this social reality and, as a result, change the context in which we live.

Forgive me for the high-school philosophizing.