Is there an specific word that could describe ideas/questions that could stimulate thoughts?
For instance, if someone asks a question:
1). If all the nations in the world are in debt, where did all the money go?
This question seems easy to answer on its face, but in giving the easy answer other questions can carry us into deeper issues of government and finance. How would you describe the characteristic of this question that stimulates thought?
Is there a specific adjective for this or are there just compound/hyphenated adjectives?
Note:
The original post provided the example question:
Why is red red?
Best Answer
My best suggestion would be generative : having the power or function of generating, originating, producing, or reproducing.
Other words that come to mind are provocative (especially if controversial), engaging (giving rise to debate or argument), emotive or affective (if arousing feelings), seminal (if referring to highly influential ideas in the past).