1. This patent is on a variation that, as I mentioned in my comment, is very unlikely to ever be infringed when "people solve their own problems". Really, if yo

1. This patent is on a variation that, as I mentioned in my comment, is very unlikely to ever be infringed when "people solve their own problems". Really, if you can think of a problem that that linked-list problem solves, I'd be very interested in knowing. 2. There is no tax on abstract thought. There is only a dispute if you make, use or sell infringing products. You are free to think whatever abstract thoughts you want. Given the vast majority of patents are a) highly specific and b) unlikely to be infringed anyway, it's unlikely any of your "abstract" thoughts turn into infringing products. Do you know of anything you've developed that has ever been the precise thing that infringed a specific patent?