Discharging passengers works the same way. Outside of major population centers with large terminals and union stations, such as Chicago and even smaller ones like Cincinnati or Richmond, trains won't be unloading that many people. The train crew will sit passengers based on where they are getting off at so that when the 12 car long distance train arrives at Middle-of-nowhere, UT with a platform that only handle 4 cars the engineer only has to line up the cars where passengers getting off at that stop are seated.
I think what cascaderailroad is getting at is that developments weren't always developments. When the railroad was originally graded out in say, 188-whatever, there was nothing there but a few hundred farmers, if even that many, along the river. Fast forward to the 1950s and now you have 70+ years of development spurred by the rail-link with even more coming with the post-war housing boom. That tranquil stream bed is now covered by commercial district and they didn't realign the railroad to build it. Consider the layers of development then when building - ask what was here first? Topography, waterways, rocks, etc., then trading paths or wagon trails, followed by the railroad, this sparks an economic boom leading to a growing city, then major highways and later interstates will start popping up in the mid-20th century. When Jimbob Pioneer plopped his house in that valley in the 1860s he didn't draw a grid out of what he wanted the city to look like 100 years later.
I think what cascaderailroad is getting at is that developments weren't always developments. When the railroad was originally graded out in say, 188-whatever, there was nothing there but a few hundred farmers, if even that many, along the river. Fast forward to the 1950s and now you have 70+ years of development spurred by the rail-link with even more coming with the post-war housing boom. That tranquil stream bed is now covered by commercial district and they didn't realign the railroad to build it. Consider the layers of development then when building - ask what was here first? Topography, waterways, rocks, etc., then trading paths or wagon trails, followed by the railroad, this sparks an economic boom leading to a growing city, then major highways and later interstates will start popping up in the mid-20th century. When Jimbob Pioneer plopped his house in that valley in the 1860s he didn't draw a grid out of what he wanted the city to look like 100 years later.