Not all the towers along a transmission line are identical. Look closely at a tower where the line makes a sharp turn and you will likely find it is wider and beefier than other towers along the route. The added strength and weight are needed to resist the unbalanced pull of the conductors, which might overturn an ordinary tower. These special towers are called deviation or angle towers.
The transmission-line tower everybody knows is an Erector Set latticework of steel girders and diagonal braces. The techniques for designing and building these towers are the same ones used in constructing steel bridge trusses or crane booms. The individual pieces can be made cheaply from rolled steel and then bolted together on the site. This last point is more important than it might seem: transporting a fully assembled tower 100 feet tall is an awkward and expensive business.
When we use non-spatial social apps, we often understand that another's cognitive presence is there, but we can't feel the more human presence we're wired to need. When we're not social distancing, we fulfill this need elsewhere, outside of software. We meet for coffee. We go on a walk. We play a game, or show a friend something funny on our phone and watch them laugh. We have infinite options at our disposal for relating to others. Though the lack of these same options inside the software we use is sometimes inconvenient, we can usually get over it.
But things are different right now. We're constrained to rely almost exclusively on software for social interaction. What are usually minor inconveniences in our existing applications are now the main factor preventing us from fulfilling our social needs.