Harry ending up in Nocturn Alley

[Littlekat10]

No: HPFGUIDX 100820

I have a theory about why Harry ended up in Nocturn Alley instead of Diagon
Alley.  My thought on this is this:  Could it be that JKR was trying to show
us how small a step it is to end up on the darker side of life?  Consider
how Hagrid and Harry only had to walk a short distance to end up in Diagon
Alley.  A very small step indeed.

Or could it have just been "pure dumb luck!"?

Littlekat