Turning point in any system, company or in an organization which can be positive or negative. Mathematically inflection point is the point on curve where the curves passes its tangent and the shape of the curves changes from concave upward to concave downward or it can be opposite. The curves show the turning point which reflects the positive and negative side of it.
Diagrams
Originated from/Coined by
Andy Grove
Further Reading/ References
https://en.wikipedia.org/wiki/Inflection_point