Creativity?

How is anything new ever made?

Perhaps this question can be boiled down to a simpler one: How do we make a choice when there are few constraints? or How do we choose between alternatives? or even How do we make random choices?

Ask a computer to choose a random digit and it may be programed to generate an apparently random number by using complex algorithms involving huge prime numbers.

We imagine we can choose between 2 alternatives easily. Apolonius’s ass is said to  have starved to death because it could not decide between 2 equally attractive piles of hay. How do we decide? ‘We just pick one’ you say but what does this process of just piking involve?

Evolution is meant to proceed by  selecting the most well-adapted random mutation. But what does the process of randomness actually entail?

The second law of thermodynamics depends on random interactions more likely to produce chaotic than ordered structures. But what governs these random interactions? How do they take place?