> However we do not know any mechanism that would allow the spontaneous apparition of such living beings by natural processes, like those that exist for H, C, N

> However we do not know any mechanism that would allow the spontaneous apparition of such living beings by natural processes, like those that exist for H, C, N, O and S as the main bioelements. Side point: One could also say that if we create silicon-based life forms to carry on our legacy, those life forms did in fact spontaneously appear, and "bacteria" and "dinosaurs" and "humans" were all part of that long but spontaneous process. Such a process could happen elsewhere in the universe as well, but yes, that then requires C, N, O, S, H, etc. to exist for at least a few billion years.