Complex sentence: According to Schumacher the descriptive sciences are primarily concerned with what can be seen or otherwise experienced, e.g. botany and sociology, while the instructional sciences are concerned with how certain systems work and can be manipulated to produce certain results, e.g. biology and chemistry.
Split into simpler sentences: According to Schumacher the descriptive sciences are primarily concerned with what can be seen or otherwise experienced, e.g. botany and sociology. While the instructional sciences are concerned with how certain systems work and can be manipulated to produce certain results, e.g. biology and chemistry.