Eloquently sums up my feelings about the disadvantages of dynamic typing

[brad clawsie]

an excellent post, thanks for linking it Walter

the relative weakness of dynamic-typed tools is compounded by the 
fact that they tend to be used to build monolithic applications, 
typical of what might emerge from rails, php etc. you take the 
whole ball of mud or nothing. with no types to define the "rules 
of engagement", management of the interior of the application 
becomes lore-oriented...i.e. application lifetime job security 
for the original developer.

but its also important to put dynamic tools in their proper 
context. in the mid-90s they vastly accelerated many industrial 
coding chores. they had their time, but I believe that time is 
over.