“…In the laboratory, a large number of studies have reported systematic biases in the perception of 3D motion, despite the availability of many such cues (Fulvio, Rosen, & Rokers, 2015;Harris & Dean, 2003;Harris & Drga, 2005;Lages, 2006;Rushton & Duke, 2007;Welchman, Lam, & Bülthoff, 2008;Welchman, Tuck, & Harris, 2004). These perceptual errors may contribute to behavioral failures in real world scenarios, such as catching projectiles (Peper, Bootsma, Mestre, & Bakker, 1994) and driving under foggy conditions (Pretto, Bresciani, Rainer, & Bülthoff, 2012;Shrivastava, Hayhoe, Pelz, & Mruczek, 2010;Snowden, Stimpson, & Ruddle, 1998). Here we ask if a range of systematic errors in 3D motion perception can be understood as the consequence of 3D viewing geometry and reasonable prior expectations about the world.…”