Optical Illusion: Only true detectives can spot the boatman hiding in the lake in 9 seconds! admin 20 hours ago BioGraphi Comments Off on Optical Illusion: Only true detectives can spot the boatman hiding in the lake in 9 seconds! 0 Views Optical illusions: Images that trick your brain and challenge your ability to perceive things are called optical illusions. The ability … Read more Share Facebook Twitter Stumbleupon LinkedIn Pinterest