What archive did Tacticus bring up that says anything about Jesus? I want to know the author, the date, the location of the document, and the witnesses who vouched for it.
Standards of citation had not been established yet. Anyhow we couldn’t check things such as state archives for veracity anyway because they’re lost and then your argument would be that Tacitus made it all up.
Is there a standard of proof that could actually convince you? And if so, can it be realistically attained? Do you apply the same method and standard to the existence of other historical figures? Can you even spell out your method and standards.