The conspirators never met exactly openly, but they assembled a few at a time in each other’s homes. There were many discussions and proposals, as might be expected, while they investigated how and where to execute their design. Some suggested that they should make the attempt along the Sacred Way, which was one of his favorite walks. Another idea was to do it at the elections, during which he had to cross a bridge to appoint the magistrates in the Campus Martius. Someone proposed that they draw lots for some to push him from the bridge and others to run up and kill him. A third plan was to wait for a coming gladiatorial show. The advantage of that was, because of the show, no suspicion would be aroused if arms were seen. The majority opinion, however, favored killing him while he sat in the Senate. He would be there by himself, since only Senators were admitted, and the conspirators could hide their daggers beneath their togas. This plan won the day.
In ancient Roman history there is a story of the Assassination of Caesar in which known influential men created a plan of “plausible deniability”. Each man participates in the destruction of a certain rulers death and so no man can be held directly accountable for it.
A curious reversal of such a plan comes to mind in which a collective of individuals’ creativity and intelligence is harnessed in such away that a favorable invention or mechanism arises. Eeach of the individual contributors still retains their own plausible deniability-hence the reverse Caesar.