How Much of a Chance to Give a Book Before You Give Up?

How do you know how much of a chance to give a book before you sort of give up or decide to skip lots of it? For example, like when sawing a new t v series. There's no shortage of enthralling reeds, so you might as well just go for those. And i quite like readin with a very big font on kindall, which means there's only maybe two agraphso,. Or actually, possibly even just one paragraph on a page at any given time. So my heroistic is that i will give it about ten, 15 minutes of flickering trou on, kindall with very big font. It not like speed rating or anything, s