The original hypothesis was based on the existent resistor, capacitor, and inductor. The memristor would complete the symmetry between these components and the

The original hypothesis was based on the existent resistor, capacitor, and inductor. The memristor would complete the symmetry between these components and the underlying physics. https://en.wikipedia.org/wiki/Memristor#Background https://en.wikipedia.org/wiki/Memristor#Background And I'm going to assume GP is basically referring to the first paragraph of the next session regarding definition and criticism: According to the original 1971 definition, the memristor was the fourth fundamental circuit element, forming a non-linear relationship between electric charge and magnetic flux linkage. In 2011, Chua argued for a broader definition that included all 2-terminal non-volatile memory devices based on resistance switching.[2] Williams argued that MRAM, phase-change memory and ReRAM were memristor technologies.[21] Some researchers argued that biological structures such as blood[22] and skin[23][24] fit the definition. Others argued that the memory device under development by HP Labs and other forms of ReRAM were not memristors, but rather part of a broader class of variable-resistance systems,[25] and that a broader definition of memristor is a scientifically unjustifiable land grab that favored HP's memristor patents.[26]