The stock of useful scientific knowledge is bounded rather than endless.

What these subjects mean

optimism Expecting things to go well: whether it is what gets things built, or a bias that forecasts keep paying for.

innovation Where new things come from and how they spread: invention against diffusion, and being near the factory floor.

What José Luis Ricón actually said

Do you hold this korrent?Do you also believe this?

Shared subject first, then similar wording. They may agree or disagree.