During our lesson we came across an article describing how several tricks, or illusions, can influence the opponent's actions, for instance the goalkeeper can expect where the ball will go by taking information from the player's movements or how his posture can influence where the ball will go. In my opinion, I believe that happens unintentionally and subconsiously so we don't have any power over it, in other words we cannot control it. Therefore, I think that it is fair and it is also advantageous so as to, for example, the foootbal team we support have more chances of winning.

When you come across a video on social media regarding illusions you'll stop and watch and, I suppose, most of us find them fascinating. But why? Our brain is keen on learning new things, so anything new and suprising is something that we naturally like, because it means that we may learn something out of it. Moreover, we tend not to pay enough attention to the world, but when something unexepcted happens we give our full attention to it. For these reasons, I feel that we enjoy watching optical illusions because our brain can't explain them and it can't get used to them.