20 Years ago, hmmm Lerxt, that would have been Microsoft Windows 3.0 you are speaking of. Man, you really are wanting to talk about basics, as in very, very basic. I used that system and had friends that developed on it (tons and tons of Mac code still in the Windows OS back then, for those who programmed on the system level and had access. They had the code still in there when I saw it, which was after going golden and releasing, but they just could not figure out how to wire it all up and did not have time to figure out what they coud delete without bring the whole house of cards down around them. But that is a different topic for a diffeent day. Good times though, so thanks for the pulling back those memories).
Exactly what program were you using on Windows 3.0 to import all of those digital camera images and delete single images from an import stream? I was there and I can not recall a single digital photo stream coming into my Windows 3.0 system from the internet. Heck, most people had not even heard of the net yet, let alone the the concept of photo streaming or cloud services. What "digital camera" wher you using? I suspect that you were using a DCS 100 , IF you even had a digital camera back in 1991, as it was about the only digital camera around back then sine the Fuji was not marketed here in the states (that is making the assumption that you are here in the US). You must have felt like a king spending better than $10k for a 1.2 or 1.3 megapixel camera. Man, talk about some ugly, blurry images, but you know, you had the thing! You know it is really harmful to be breathing in those fumes when you are soldering on your motherboard!
Pardon the pun, but I think you are comparing Apples to Oranges here. The task of deleting single photos that you speak of doing on a Windows machine 20 years ago more than likely would have been deleting a scanned in image file from a directory. Apple could do that back then without any problems, so you must be speaking about a diffeent type of single photo deletion method.
MS Windows OS in 2011 can delete single digital images from an image application that stores such images on your drive, but every Mac can do that same task and has been able to do so for years, so again, you must be speaking about something else.
Windows Mobile phones do not have any such wireless, cloud based photo streaming service that syncs with all of your Windows devices, so you absolutely cannot be talking about doing that on a Windows machine. After all, how do you delete single images from a stream and product base that does not exist yet?
Maybe, since you're speaking about getting "back to basics" and thinking that you can not perform similar, single photos deletions from like processes on an Apple product, you must be meaning that you need some basic instructions on how to do perfom such tasks. It's simple, launch the Mac equivilent to what ever Windows application you were using, select the single image you want to delete, and simply hit the delete key. There is a very, very short learning curve, because it can not get any easier than that, be it on a Windows PC or a Mac.
Okay, yes, we all know that people want features, such as the ability to delete singe photos, added to Photo Stream. I have absolutely no problem with that, and would like it myself. But I also want my laptop to pop pop corn for me, but I am on a Macbook Pro and they do not run hot enoughl for that to happen, and after moving away from my Windows laptop, which would pop corn, I refuse to go back just for that popping feature of Windows. I guess I just have too much real work to do to be sitting around eating pop corn anyway!
Please note that you CAN delete single photos on any Mac, and I suspect that you will soon be able to do so soon within Photo Stream on your iOS devices as well. The distinction here is that this will be as an added feature to meet the wishes of users, but not because it was ever meant to be a part of the original funcitonality of the service.
If we are getting back to basics, and you are going to strat throwing Windows into the equation, let's at least try be smart enough to discuss like processes, you know, like deleting images on a hard drive on both systems using desktop based applications, or the iOS 5 implementaion of Photo Stream compared to the Windows implementaion of cloud based photo streaming that wireless syncs to all of those hot little Microsoft devices that people are dying to get their hands on. Oh wait, there is no such beast yet, since they have not had time to steal the concept and get it set up yet. Oh, but when they do, and you know it is coming, I'm sure you will be jumping back to that Windows Mobile phone and will just be killing it over there! Man, you're cracking me up, I want some of what your smoking or drinking!
Cheers!