a thought about Ruby on Rails

ruby on rails... a agile programming language which will skip
compilte step duringdevelopment, others like java, .net, C
all need to compile b4 it's run, ruby juz need modify-run,
while others need modify-compile-run. may be this good for
developer when their development in progress, but izit good
for execute for user, it will definitely slow down the
running time. or what i think is ruby can juz use modify-run
model for development, but when really launching it go
through comilation step, then may be it will solve the
problem, but dunno whether ruby framework design have this
kind of flexibility or not. like flash development, .swf to
.exe... need time to go in more detail then. I think every
programming language have its pro n cons, like super
asynchronous communication pattern AJAX also have it's nature
limitation, bookmarking n back issue... can see from that all the element in this world have 2 face, like Ying Yang...