 It is noteworthy that very little is "taught" on "how to produce the spiritist phenomena", as in Kardec's view these were natural and spontaneous.Kardec regards as more important the correct understanding and the tight control of conditions "during" and "after" the phenomeon took place.He thought it was wiser that the would-be medium knew what to expect and how to behave before he was given any instructions on how to engage on evocation.