To be able to demarcate science from non-science is immensely important, for our society, and its individuals. Science is our main source of knowledge and as such has many applications in our daily lives, and we need to be able to distinguish scientific findings and information from the many ideas and unbacked theories which are presented to large parts of the population, appearing as if they are fact. This may include something as fickle as weight loss plans that use diction not easily understood by the public to make the product appear authorized, certified and scientifically sound, when really the product is not scientifically tested, or trials not done in a credible manner. Another, possibly more serious scenario is in education, particularly science, many supporters of creationism and other pseudo sciences incorporate these teachings in schools, teaching them as if they were approved scientific theories to impressionable children, some who grow up retaining those beliefs, they were wrongfully taught, as fact.
Also, being able to demarcate between science and non science and pseudo science is part of being scientifically literate, to not only be able to read and understand scientific findings and journals but to be able to critically distinguish between valid, trustworthy findings and theories or ideas presented in a scientific format without actually adhering to the scientific method and other requirements for scientific research.
Demarcation between science and non-science or pseudo science is particularly important in scientific education, as it determines, for almost every member of our society, what they will accept as true regarding science, particularly creationism and evolution. Having public school with regimented teaching standards ensures that our population is taught to the same standards with the same material, of course individual teachers are not objective, but the system is supposed to be. Within the public school system evolution is the main origins theory, however it is not illegal to teach creationism, which theory of origin is thought is determined by teachers, schools, counties and states, some states require public schools to teach evolution, some teach the critique of evolution, some teach both creationism and evolution alongside one another. Even if evolution is the required theory to teach, individual teachers can, perhaps not legally, but can portray the theory in anyway, and if the students pass the standard test, the teacher has officially done his/her job. The test does not determine what they will lead their life believing.
This is an issue because creationist want to teach it as a science, creationism as a religious belief that many people still believe to be scientifically true. A common argument in favor of creationism is that the theory of evolution has gaps of activity and then periods of quick growth which proves that there is the "Hand of God" creating, but this does not make...