Are technical computer books supposed to make you laugh out loud?

If you are using the digital version of this book, we advise you to type the code yourself or access the code from the book’s GitHub repository (a link is available in the next section). Doing so will help you avoid any potential errors related to the copying and pasting of code.

Honestly, I laughed out loud when I first read this.

Do you find manually retyping something (already in a digital format) less error-prone than copying and pasting?

Am I unusual in finding copying (& pasting) something being less likely to result in any potential errors than typing it myself?

I get that typing something yourself can help when you're learning something and want to be clear about what code you're adding and why. But, cutting and pasting has always been less error-prone than typing.