Questions about the reproducibility of signatures reminds me of this case https://en.wikipedia.org/wiki/Howland_will_forgery_trial https://en.wikipedia.org/wiki

Questions about the reproducibility of signatures reminds me of this case https://en.wikipedia.org/wiki/Howland_will_forgery_trial https://en.wikipedia.org/wiki/Howland_will_forgery_trial in which Charles and Benjamin Pierce were brought in as expert witnesses. There's a good account in https://en.wikipedia.org/wiki/The_Metaphysical_Club:_A_Story_of_Ideas_in_America https://en.wikipedia.org/wiki/The_Metaphysical_Club:_A_Story....