firstly, be careful with your comments, it seems you make them based on your knowledge, secondly, read my answer above, it may be a little revealing for what you are proposing, thirdly, rarely in life can you say 100%. I suggest you take care of that, it's called the scientific method, I think it's a very good suggestion from @ertytux, I had it in mind but I think that for the first post it doesn't work. In the near future I will do it and in some way where the drawing can be noticed without reaching technicalities.