demonstrable

"I spend a fair bit of time with players who are in between playing the game and having demonstrable symptoms. What I'm finding from conversations with them is they are scared to death."

The first minister said independence had to be established as a “compelling and demonstrable” proposition.

“If we don’t see demonstrable results, I’ll start to redirect money,” he said at the time.

The signatories requested an urgent formal investigation by the board into the problems, "alongside senior management's demonstrable failure to properly address the issue".

The pop psychologist in me would suggest in a world without answers to crises in the near and the long term, they propose successful solutions, based on demonstrable facts, arrived at through human intelligence.