Wikipedia
In law, sciens, the Latin word for "knowlingly", describes a state of mind. It refers to knowledge of a fact, usually of a specific risk. It is usually pleaded by way of defence. For example, where a claimant suffers a personal injury, the respondent to the claim may aver that the claimant was aware of the risk when they undertook their course of conduct. Clauses in contracts which require participants in dangerous sports to acknowledge certain risks in the sport are usually drafted to set up a potential sciens defence.
Usage examples of "sciens".
Constat enim inter omnes nihil tam operose ab aliis esse perfectum, quod non horum elegantia commentariorum superetur: qui sunt editi, ne scientia tantarum rerum scriptoribus deesset, adeoque probantur omnium iudicio ut praerepta, non praebita, facultas scriptoribus videatur.
The most learned theologians in Germany and elsewhere have whole-heartedly supported the criminal enterprise of the warlike and criminal scientia militans.
Erat autem in Caesare cum facultas atque elegantia summa scribendi, tum verissima scientia suorum consiliorum explicandorum.
Non virtute neque in acie vicisse Romanos, sed artificio quodam et scientia oppugnationis, cuius rei fuerint ipsi imperiti.
Ulrich Endelbert speaks of him as: Uir in omni scientia adeo divinus, ut nostri temporis stupor et miraculum congrue vocari possit (De summo bono, III, iv).
Cicero, in enumerating the qualifications of Trebatius, says, Accedit etiam, quod familiam ducit in jure civili, singularis memoria, summa scientia, which means that Trebatius possessed a still further most important qualification for a student of civil law, a remarkable memory, &c.
And you see a Wheel with two planispheres: one displays and teaches all the scientia of the Primum Mobile, and the second the doctrine of the Octava Sphaera and the fixed stars, and motion.