“Our conscious perception of the world, though relatively stable, is not static. We are incapable of being fully objective, even in our most mundane observations and impressions. Our awareness of the objects around us is informed and fine-tuned by any number of transient factors—our strength and energy levels, our sense of confidence, our fears and desires. Being human means seeing the world through your own, constantly shifting, lens.”

• By Christof Koch on July 1, 2010