Whimsical: determined by chance or impulse or whim rather than by necessity or reason; "a capricious refusal";"authoritarian rulers are frequently capricious"; "the victim of whimsical persecutions"
John made a whimsical decision to change suppliers and incurred a large loss of revenue cost as per the contract.
After a year of poor sales revenues it was clear that the strategy had been decided on a whim without any research.
Sue consulting team was subjected to whimsical changes in direction.
After one telephone call and a meeting you could say McCain made a whimsical choice for the VP slot.
You get the point right.
Ten Anecdotes does not data make. Act fast, be decisive, don't wait. The path to success is filled with cases where massive action has led to extra-ordinary success. But don't be whimsical...
Check the facts, research the situation, work through the scenarios. And do it quickly. Then act.