Edited sentence: Conventional science acts in accord with and being in tune with traditions or practices accepted from the past.Conventional science conforms with accepted standards only.Mainstream science is rigidly formal and bound by convention.Some of these theories are considered by some to be barred from attention or consideration Mainstream science follows only the prevailing current of thought, with little deviation.Some of these theories are considered by some to lie the outside boundary of the "conventional" or "mainstream" science (though the definition of each of these terms can sometimes be subjective).Some of these theories are considered by some to not be based on fact or investigation.These theories do not follow at least one of these proscribed items, in one aspect or another