Or since it's so deep within Federation space it would be assumed under
normal circumstances that the fleet would be able to intercept any trouble
long before it could reach the Sol system. And again, with all those defense
systems...
All I have to compare it with is my own experience in the navy..and everytime we returned from deployment, and left Hawaii for San Diego, we would pass by several Navy ships, American and British, in between Hawaii and San Diego..and the closer we got to San Diego, the more 'concentration' of ships we would pass by...meaning, the closer we got home, the more ships we saw..which makes sense...
Earth is a major player, at least we are led to beleive. And yet only 50 ships were available between where ever Picard was when he was assimilated and earth??? I find that hard to believe, especially after the events of Nomad--Vgr--Whale Probe--XINDI arc--and who knows what else...just doesn't hold water with me...
Rob
Let's also remember that space is huge, and isn't a mostly two-dimensional plane like the oceans, but three-dimensions. First off, that means a lot more ships spread out over a lot more area (perhaps the Federation has more sectors under its belt than Starfleet has starships?), and second, that means any number of routes could be taken as well, further dispersing the group.
For that matter, if we're going with the modern day analogy, how quickly can we must up a force of 40 ships of all sizes in centralized location in a matter of days, in the hopes of stopping a ship that easily outpaces our fastest? Isn't that what fighters are for? The big difference in Trek is that mother ships tend to be faster than fighters at warp speeds.
On a similar route, if we did have an intense build up of forces to face off in a huge war, something that required us to systematically summon all of our global ships back to the US, it would take a heck of a lot more time than a couple days to do so. By comparison, it's implied in DS9 that Starfleet had been preparing for the Dominion War for at least a year, and more than likely since the attempted coup d'etat by Leyton. When comparing Wolf 359 to the Dominion War, it's quite clear that Wolf 359-Starfleet didn't have the sheer amount of prep time as they had in the Dominion War, or First Contact.
Also, one last thing: I suppose under any other normal circumstances, fifty ships would do just fine. If the Breen attack had 100 ships in its fleet, a counter-force of fifty ships plus system-wide defenses should theoretically suffice. The Xindi superweapon was destroyed with a MUCH smaller force than fifty ships as well. In DS9, a Klingon force of about 50 ships was far more than enough to constitute an emergency, and those 40 ships in "The Die is Cast" was something that shocked everyone. From a modern day perspective, I don't know how many ships are in the Navy's roster, but a build up of five ships (say, in the Middle East) is
always a cause for concern. Even if we have thousands upon thousands of ships, I don't imagine that to change. And under most circumstances, a fleet of five ships can still perform almost any duty imaginable.
And again, V'ger and the Whale probe aren't quite fair as they destroyed or disabled (respectively) anything that came in their way, as they were exotic forces. With V'Ger and the probe, it seems as if we could have had hundreds of ships around Earth and the result would be the same.