Definition of conspire

verb: make secret plans jointly to commit an unlawful or harmful act.

Origin: from Latin conspirare 'agree, plot', from con- 'together with' + spirare 'breathe'


in other words... to conspire is to "breathe together" in secret to plan something harmful.
the event in boston was harmful and it was definitely planned in secret.

the question is "who planned it?"

Definition of theory

noun: a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained

Origin: from Greek theoria 'contemplation, speculation', from theoros 'spectator'

Definition of speculate

verb: form a theory or conjecture about a subject without firm evidence

Origin: from Latin speculat-'observed from a vantage point', from the verb speculari, from specula 'watchtower', from specere 'to look'

Definition of evidence

noun: the available body of facts or information indicating whether a belief or proposition is true or valid

Origin: from Latin evidentia, 'obvious to the eye or mind'