1) If this argument is valid, then shortalls are valid.
2) This argument is valid.
3) Therefore, shortalls are valid.

Sign in to participate in the conversation is a community-led microblogging platform. We’re part of a decentralised federated social network, based on the open-source Mastodon project. is hosted on our own servers and supported by our patrons – we don’t sell your personal data or have ads.