Operational thinking is the dominant mindset in the 1st Industrial Revolution. Mechanization requires operational thinking and the solutions provided by this stage deal with the operation of things.
Analytical thinking is the dominant mindset in the 2nd Industrial Revolution. The analytical approach allows managing mass production in a meaningful way by dividing these masses into manageable entities.
Systemic thinking is the dominant mindset in the 3rd Industrial Revolution. Automation requires envisioning the unified field of the operation and its components in order to build the automated processes.
Conceptual thinking is the dominant mindset in the 4th Industrial Revolution. The Industry 4.0 stage is based in improving the adaptiveness of processes by being fully consumer/user/buyer oriented, increasing the productivity which implies improving the cost/value relation and increasing the quality to become fully reliable.
NOTE: The Unicist Research Institute has been, since 1976, the pioneer in complexity science research to deal with adaptive entities and became a private global decentralized leading research organization in the field of adaptive systems and environments. It was one of the precursors of the Industry 4.0 concept. https://www.unicist.org/turi.pdf