Ask Slashdot: What Would Happen If All Software Ran On All Platforms?

Slashdot reader dryriver writes: We live in a computing world where the OS you use -- Windows, OS X, Linux, Android, iOS, others -- often determines what software can and cannot be run on a given electronic device. (Let us pretend for a moment that emulators and other options don't exist). What if -- magically -- such a thing as as Universally Compatible Software Application were possible. Software, in other words, that is magically capable of running on any electronic device equipped with enough CPU, GPU and memory capacity to run the software in a usable way.

Example: 3D CAD software that runs on Windows 14, Playstation 7, an Android Smartphone, Nintendo's latest handheld gaming device and an Ubuntu PC in exactly the same way with no compatibility problems whatsoever occurring. What would and would not change in such a computing world?
He also asks an even more important question: will this ever be possible or feasible from a technical standpoint? So leave your best answers in the comments. Will it ever be possible to run all software on all platforms -- and what would happen if we could?

Comments

Java

[Erik Hensema]

We've already got that. It's called Java.

The following would happen:

[Ihlosi]

Some manufacturer makes an device that is incompatible to the universal software ecosystem, but cheaper/faster/better/better marketed.

And the situation is back to the current state.

The problem...

[Yaztromo]

The problem with something like this always comes down to the fact that applications have to be coded to the lowest-common denominator of functionality of all platforms. That's the situation both Java and Web apps tend to find themselves in.

Does your OS have some cool notifications subsystem that other platforms don't have? The universal app can't use it (or if it does only for those platforms that support it, it's hardly running identically on every platform anymore). Or how about if your hardware has something fancy like Apple's new Touch Bar? Can't use that either.

This is the problem we always see with desktop Java applications. They can typically do well with the basics, but if you want to tie-in to some stand-out feature that isn't available on every platform, you're generally SOL (unless you want to rely on JNI, and perhaps filling in missing functionality on other platforms with custom native libraries I suppose -- but again, that's not exactly cross-platform code, and requires a ton more work.). With web apps we see a similar issue; you're constrained by what the various standards allow, and can only escape that with plug-ins.

We also see this in the video game console world. Sony did some really cool things with the PlayStation 4, like adding the touchpad to the controller, the programmable-colour LED array on the back of each controller, and the second screen functionality that allows you to use a tablet or phone as a wireless secondary information display. Unfortunately, most cross-platform games tend to ignore these features (to varying degrees), as they're simply not available on the PC or Xbox One.

In the world you describe, there really wouldn't be any ability for anyone to stand above the crowd with new special OS or even hardware features (beyond maybe some low-level performance tweaks), because as soon as you did so, you would be incompatible, and either nobody would use it, or you'd have to permit all of your competitors to also implement your new feature.

This reminds me somewhat of the following example: OS/2 ran Windows 3.x programs better than Windows 3.x did. It could pre-emptively multitask Windows 3.1 applications at a time when Windows itself couldn't, and a single errant Windows application could bring down the whole system, or fail to yield() and simply take up all the processing time for itself. Because of this, too many big development companies simply targeted the lowest-common denominator and wrote Windows 3.1 code for use on OS/2 (WordPerfect is a great example -- they went out of their way to tout OS/2 compatibility, but in reality their OS/2 version was the Windows 3.1 version with some OS/2 templates and WPS integration tools slapped on top of it). And we all know what happened to OS/2 (or I suppose I presume we all know -- I guess you could be 16 or 17 years old and not know what happened back then. When did I start getting so damned old???)

Yaz

Dear god why?

[Anonymous Coward]

I've been doing web stuff for a decade, pretty much since the whole Web 2.0 thing was a fad. It pays the bills, but I always ask myself: why are we doing this to ourselves? HTML was originally a document format, not an application framework, and dear god does it show. From the kludges that we tacked on to maintain state to the horrifically bad data serialization/transfer methods. All of this stuff was solved decades ago with simple network aware applications. Yet here we are in a world where PHP, of all things, is one of the best programming languages for networked applications for the simple fact that its built-in comparison operators map so well to the (equally crappy) HTTP variables.

I don't know how to get out of this trap, but dear lord I wish somebody would figure it out.