Why dynamic is useful then static

[Micky]

Websites that utilize databases which can insert content into a webpage by way of a dynamic script like PHP or JavaScript are increasingly popular. This type of site is considered dynamic. Many websites choose dynamic content over static content. This is because if a website has thousands of products or pages, writing or updating each static by hand is a monumental task.

[Posinha]

One thing more we can't work online on static website, I think I am right.

[Roma214]

Dynamic programming is a technique for professionally solving a wide range of search and optimization problems which exhibit the characteristics of overlappling subproblems and optimal substructure.