I'm sorry for your loss and for the loss of his effort (presuming you or another heir have not taken up the reins of his intellectual property).
Another step to consider in lateral thinking about (personal diet -> diet book) is the marketing of such. Instead of allowing it on the marketplace, it could be sold by word of mouth in the manner of multilevel marketing. Many MLM systems act as giant siphons for unethical people. I wonder if a forking blockchain could act as method to promote honest transparency, where each level of organization becomes a fork.
Another step to consider in lateral thinking about (personal diet -> diet book) is the marketing of such. Instead of allowing it on the marketplace, it could be sold by word of mouth in the manner of multilevel marketing. Many MLM systems act as giant siphons for unethical people. I wonder if a forking blockchain could act as method to promote honest transparency, where each level of organization becomes a fork.