Why do ebook novels have a table of contents?

Novels in print don't have tables of contents. They don't bother to tell you that Chapter Ten starts on page 83, for instance. Have you ever wished a novel did?

But all ebooks have them. They give you a list of links so you can jump to any chapter, or to the goodies at the front and back of the book.

But how do you know you want to read Chapter 21? The table of contents doesn't tell you what's in Chapter 21. 

I guess you can use the links to jump halfway or two-thirds-the-way through the book. But you have the slider at the bottom for that.

I question all this only because I was having trouble adding the table of contents to Dark Mural, the first Nicole Tang Noon mystery, which I will publish on Amazon in September.

I finally found a simple way to do it after trying several other simple ways that didn't work. So Dark Mural will have a table of contents, just in case you feel the need.