Is it normal to duplicate the introduction of an article in several sections of the site?

Question

Google

Hello
Let's imagine. There is a company website in the structure of which there is a blog. The blog has sections. Each entry has a title and an introductory part. In this form, these entries are displayed on the main page, blog page and blog section page. In fact, this is duplication of content on different pages of the site. How do the PS relate to this and what does practice advise to do?

Answer 1

check if the uniqueness of the text of each of these articles is in the range of 70-90%, then it will not affect much