Why has the boundary between electrical engineering and electronics engineering become less distinct?

The distinction between electrical engineering and electronics engineering has become less sharp due to rapid technical progress and the integration of these fields in modern applications.1

Traditionally, the two fields were differentiated by the strength of the electric currents involved: electrical engineering focused on "heavy current" applications, such as power systems and apparatuses, while electronics engineering dealt with "light current" applications, including communication systems and computers.1

This boundary has blurred as electronic devices have become essential to traditional electrical power systems. For instance, large arrays of electronic components are now used to convert high-voltage power at the megawatt level. Furthermore, the regulation and control of complex, interconnected power grids now rely heavily on electronic computers to perform calculations and manage system requirements with a speed and accuracy that manual methods cannot match. As technology continues to evolve, the integration of integrated circuits and microprocessors into diverse industrial and consumer systems has further unified these engineering disciplines.12