Why is ElementType!(char[]) == dchar?

[Tofu Ninja via Digitalmars-d-learn]

On Saturday, 9 July 2016 at 11:35:24 UTC, Tofu Ninja wrote:
> On Saturday, 9 July 2016 at 11:29:18 UTC, ketmar wrote:
>> On Saturday, 9 July 2016 at 11:24:01 UTC, Tofu Ninja wrote:
>>> Seems pretty silly to me...
>>
>> due to universally beloved autodecoding.
>
> Hmmm... I dont really know the history of autodecoding, why was 
> that supposed to be a good idea?

Hmm, well I fixed my problem that originally prompted me to ask 
this by using ubyte instead of char. Still kinda curious on the 
whole autodecoding thing and why it's even a thing.