Resumen A nivel nacional e internacional se estan promoviendo esquemas organizativos sistemicos de CTI la segunda indaga sobre por que estudiar los SNI y los EI en Colombia; la tercera muestra como estudiar los SNI y los EI en Colombia; la cuarta ilustra para que estudiar los SNI y los EI en Colombia de forma complementaria; y, por ultimo, se expresan algunas conclusiones. Palabras clave: Ciencia y tecnica, Sistema Nacional de Innovacion, estilos de innovacion y redes de innovacion. Abstract There are national and internationally promoted organizational systemic schemes of CTI the first one tries to bring the reader over to fulfilling an interpretation of which has been the significance of science and technology as ideology in the productive world? From a sociological sensitively critical perspective; the second one approaches why to study the SNI and the EI in Colombia?; the third sample, how to study the SNI and the EI in Colombia?; the fourth one illustrates why study the SNI and the EI in Colombia complementary form?; and finally some conclusions are in expressed. Keywords: Science and Technique, National System of Innovation, Style of Innovation and Network of Innovation.