Well, we know some materials can not be replicated. Latinum, for example, and dilithium. And there have been episodes where the plot revolved around attempts to get a substance that the Federation needed but didn't have handy ('The Most Toys' springs to mind). So the idea that certain materials are hard to come by, even given the Federations advantages, is perhaps not so outlandish.
Perfectly true, but whatever the writers reasons, the fictional universe of Star Trek turned out a certain way. Now we can point our fingers and sneer at what we perceive as mistakes, or exercise our minds to try and account for them. Personally I prefer the latter. It's more fun!
And let's make no mistake about it. In the absence of any data, all this discussion about how long to build a Defiant class is meaningless. We are not putting forward any well supported arguments, we are just batting personal opinions back and forth, like medieval philosophers arguing about how many angels can dance on the head of a pin.
Now, it may be that I've missed something somewhere, that there was a scene on screen that gave some indication as to the speed of the construction. If so could someone kindly point me towards it.
In the absence of such data, it all comes down to personal preference. Even though I know it is not canon, I consider the DS9 TM to be a useful resource. That states quite unequivocally that the ablative armour, of the sort used by the Defiant, requires rare materials and has a long manufacture time.
Problem is ... the writers made SF in such a capacity that they don't follow rational/logical way of thinking when it comes to fleets/upgrades and whatnot.
Perfectly true, but whatever the writers reasons, the fictional universe of Star Trek turned out a certain way. Now we can point our fingers and sneer at what we perceive as mistakes, or exercise our minds to try and account for them. Personally I prefer the latter. It's more fun!
And let's make no mistake about it. In the absence of any data, all this discussion about how long to build a Defiant class is meaningless. We are not putting forward any well supported arguments, we are just batting personal opinions back and forth, like medieval philosophers arguing about how many angels can dance on the head of a pin.
Now, it may be that I've missed something somewhere, that there was a scene on screen that gave some indication as to the speed of the construction. If so could someone kindly point me towards it.
In the absence of such data, it all comes down to personal preference. Even though I know it is not canon, I consider the DS9 TM to be a useful resource. That states quite unequivocally that the ablative armour, of the sort used by the Defiant, requires rare materials and has a long manufacture time.