A movie that shows how much level your attention is

Let's count how many times the white team passed the basketball because white clothing people and black clothes pass through basketball. By doing so, you can see how much your level of attention is.

Playback is from the following.
DOTHETEST
http://www.dothetest.co.uk/


The movie is stopped halfway, the answer is 13 times.


However, further questions here. Only when you want to see the Japanese translation of the question as it becomes spoiler click, please click the following image.


This movie, actually a movie of a bicycle safety campaign. Let's be careful as you may overlook the running bicycle with the same reason as the movie above.

Cycles | Transport for London

this is"Overlooking changesOr "Change blindnessIt is a phenomenon called "human beings" to repeat comparing what I saw immediately before and what I saw immediately, but it shows the strength of human visual attractionSaliencyThe thing called a habit is a mechanism that becomes impossible to notice change when inserting a different picture etc. just a moment just before. However, once you notice it, you will be able to distinguish properly from next time onwards. It is said that accidents involving bicycles are occurring with the same reasoning, so be careful with such things as when driving a car.