Zero itself seems to be an absurd number because if there is really zero of something, then nobody has ever sensed it. But even with temperatures, we don’t really have negative and positive Fahrenheits- because the coldest temperature is the impossible to reach 0 Kelvin; or the point where there is absolutely zero atoms moving.
It’s similar with electricity. Although complex numbers and multidirectional number lines are very useful when dealing with positive and negative ions, negative ions are not really less than zero ions because they are a positive amount of electrons.
I also don’t see how fractions can be less than one, because if we have 1/2 an apple, we actually still have one piece/set of all the other positively measurable substances that make an apple an apple. If we continue to divide, eventually we will lose the apple and our object will become one of whatever object it has become. Like if we take the two hydrogen atoms out of water, our one substance becomes oxygen.
Can any thing or substance be less than one?
If zero is a possible concept, can anything ever be less than zero?