  Mach puts science on a continuum with earlier human activity, in fact with earlier animal activity. What began as simple adaptations that allowed instinctive responses to immediate conditions, gradually evolved into ever more complex capacities for response. Gradually life acquired memory and thus an awareness of a wider field of spatial-temporal relations than is present immediately to the senses. Memory then grew beyond individual memory and became communicated culturally. Science is a direct outgrowth of this deep natural process: