The fallacy that criticizes the source of an opinion, instead of critiquing the reason given for it, is called begging the question.

The fallacy that criticizes the source of an opinion, instead of critiquing the reason given for it, is called ad hominem argument. In this fallacy, the proposition is stated to be false because someone who said it is not considered reliable and his opinions are not validated enough to withstand another argument.

This is false. The fallacy that criticizes or questions the source is known as the fallacy of the Appeal to Questionable Authority which is a retort that questions or criticizes the source of the information as unreliable. This is a falllacious approach because instead of approaching the actual topic, the source is criticized. 

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.