Yours is a nice example of "Natural language is robust and fault-tolerant. I can sometimes ask why when I seek factual information ... or how when I seek worth information ..."
Many people would see the two versions as the same question. Although I disagree that the why version leads (presupposes its answer), we seem to be in agreement that the two versions seek different information.
So, describing two questions that seek distinct information as "both the same question" is also a nice example of natural langauge being robust and fault tolerant .