What are some of the most compelling arguments for (supporting) the public funding of science/innovation/works-which-go-in-academic-journals?

I'm not sure how the responses look like because this is my second (free) question, but I will set a word limit of 50 words. Up to one outside reference (eg: paper, web article) can be made, but the idea must be summarised in the response. The response should summarise 1 idea only.

I will award Ṁ100 to the most compelling response given the space or 50/50 if there are two equal responses.

I will split Ṁ150 between the next 3-5 most compelling responses.

I will announce when the market will be closed 1 week prior.

If this market works ok I may make the opposite side, which are reasons against.

If there are too many responses I will have to reduce the number somehow.