These fields of numbers (whole, integer, rational, irrational, real, etc.) learned in grade school
share a common trait: they’re all one-dimensional. The straightness of the number line illustrates
this graphically. You can move up or down the number line, but all “motion” along that line is
restricted to a single axis (horizontal). One-dimensional, scalar numbers are perfectly adequate
for counting beads, representing weight, or measuring DC battery voltage, but they fall short of