They distorted information and did not integrate ideas and perceptions.
Yesterday's science is frequently today's superstition, as ideas and perceptions change.
Stevens always had, at the center of all that magical pyrotechnical language, some very grave and serious ideas and perceptions.
He edits and re-edits the images, using them to different effect in successive movies as his ideas and perceptions, and sometimes the facts, change.
No poet before him paid such close attention to the way the mind actually works, the odd jumps that connect our ideas and perceptions.
The hugely influential rock star, whose work reshaped ideas and perceptions in spheres from music and fashion to sexuality, had given no public hint of his illness before his family released a breakfast-time statement announcing his death.
In one section, the afflicted writer reflects on her work: "Somehow she'd come to believe that characters were made up of their ideas and perceptions rather than their actions".
This is where the ethics of reality augmentation will begin to intersect with an idea much discussed in political circles, the "filter bubble", a phrase coined by activist Eli Pariser for our tendency to create an echo chamber around ourselves, to reinforce ideas and perceptions that we appreciate, and mute those we find disturbing or contrary to our prejudices.
That makes me think of Wallace Stevens's portrait of the poet as "The Man on the Dump," with the wonderful lines "One sits and beats an old tin can, lard pail./One beats and beats for that which one believes". Stevens always had, at the center of all that magical pyrotechnical language, some very grave and serious ideas and perceptions.
Richard Hoggart, whose writings about British education and popular culture were massively influential in shaping the ideas and perceptions of a generation of students and teachers in universities across the country, has died after a long illness at the age of 95.
