How are major programming developed by the authors?

Question

Languages like java,C,python developed by the authors?I always had this question running in my mind😅

Answer 1

By having a lot of low level knowledge.

Answer 2

I presume that they try to fill a need of programmers that is not currently satisfied by any existing or popular language and in order to implement a new language, it's syntax needs to be implemented by an existing lower level language. E.g. one implementation of Python is done via the C language.

Answer 3

they were thinking about a new concept, a concept that isnt yet capable to do with available platform.

lets take an example of C, at the time a single program can be different in different computer architecture that means they'll need to rewrite the program almost everytime. and then a genius comes up with an idea. what if we only need a single syntax with a set of rules, then make another program to translate them into the specific computer arcitecture ? with this we only need to write once, then use this translation program on every computer.