The other mothers of invention

Necessity is the mother of invention

(excerpt from wikipedia)

"Necessity is the mother of invention" is an English-language proverb. It means, roughly, that the primary driving force for most new inventions is a need.[1]
The need to communicate led to the creation of different communication devices – this is a prime example of the expression: Necessity is the mother of invention.
In the Oxford Dictionary, the proverb has been defined as;
    "When the need for something becomes imperative, you are forced to find ways of getting or achieving it."[2]
According to the Cambridge Dictionary, this is "an expression that means that if you really need to do something, you will think of a way of doing it."[3]
Longman dictionary has defined the proverb as: "if someone really needs to do something, they will find a way of doing it."[4]

The Other Mothers of invention

We've all heard about necessity, but what about some of the other mothers?

How about injustice?

https://en.wikipedia.org/wiki/Twelve_Years_a_Slave

After going through what he did, and surviving, he spent the rest of his life dedicated to helping others, including helping with the underground railroad that led many slaves to freedom.

Injustice can be quite the motivator.