We can compare backlinks to references in books or scientific research. A quality website that connects to your site; Adds value to your site, whispering to search engines that your site is reliable and useful.
Dear pages help the reader to solve their problems quickly and easily. Therefore, having connections in content containing keywords related to your field on high authority websites increases the value of your website in Googles eye. Because Googles favorite pages are the pages that manages to offer what the user is looking for.