On this week's podcast:Agnosis is the neoclassical Greek word for ignorance. Agnotology describes the intentional production of ignorance.Professor Thomas Harrington, in "The Conscious Cultivation of Ignorance", talks about how politically and economically powerful groups fabricated ignorance under the banner of science. He stresses the need to protect people from the influence of misinformation.It’s a  fascinating discussion in today’s conspiratorial environment.We also have some commentary on Russia and Ukraine.And, of course, the Mailroom.File your comments and complaints at Leighton@newstalkzb.co.nzHaven't listened to a podcast before? Check out our simple how-to guide.Listen here on iHeartRadioLeighton Smith's podcast also available on iTunes:To subscribe via iTunes click hereSee omnystudio.com/listener for privacy information.