People like to put reasons to explain proficiency or lack of at something here , CS in terms they understand . Understanding reaction is easy because it ' s a simple concept . Most of us don ' t even begin to understand the depth of skill of these guys i mean we see the surface but don ' t unstand 100 % of how subtle it is . It ' s better to say he has good reaction time to justify it . <| sep |> Don ' t have children with this man . A dog is nothing compared to children to test your patience . As for Kvik , he ' s a big dog , but he still has a small puppy brain . My big dig didn ' t have an adult dog brain for 2 years , then it was like magic . All of a sudden commands we struggled with for months were easy and perfect , just in a matter of a few weeks .