Mike Man what's your problem ? Why did I hear your exact quote in my head the second I posted the statement, why ???.
The "information" I posted is not an issue.
You contribute absolutely nothing around here looking back at your posts.
All I do around here is help other users, come up with ideas, workarounds and development. I have contributed a ton of stuff over the years and go way out of my way to help people that's from going through so much crap, suffering, life support machines, dying, leaving my body going into absolute peace, love, knowing when I was younger. That's why I can pick things up and absorb them and it's not good picking up your state of conciseness it's very negative and destructive and makes me want to give up.
Where did it start Mike ?
Did I do something that you were so adamant was impossible ?
Get out of your fricken OSist crap I can use any OS it's not a problem for me, when you leave this world you'll see it's all crap, don't wait till then lift your consciousnesses up to a higher level now !!!!!
If you can't learn from it, have zero respect and want to continue this crap I'd rather not be here honestly.
Just let me know Mike.
I think what I'll do to solve the issue is Carbon Copy Clone my 10.9 drive to some new drives then upgrade or downgrade each drive to a different version, then when you go to run an app and it says you need this version or that version, I just reboot to the boot menu and select that drive. You could even have a common drive to store files on.
Ahhhh Comedy. Ignoring the fact that it wouldn't work, it would be fun to watch.
Microsoft, despite its compatibility modes in Windows 10, is not above breaking perfectly good software. I had to update and recompile my database applications from Windows XP that simply would not run on Windows 8 or 10.
I spent 23 years in a Windows environment, many of them doing tech support for local software firms. When someone goes on about the fantasy of Windows compatibility, I have volumes of horror stories about that nonsense—and it certainly is.
You described a technical impossibility and are trying to back it up with random quotes off the internet.
I am all for having a discussion — but that isn't it.
You described a technical impossibility..
Now that's working fine, I just need the MacBB 2019.8
but while I'm waiting I can boot up on Win7 or Win10 and use WinBB 2019.
If an app won't run I boot on the Mac volume that will run it.
I can use any OS without feeling embarrassed or ashamed that my Mac or Win friends will find out that I'm doing such a sacrilegious thing.
I have no problem using any OS all day long as long as I can create music on it

I drove a BMW the other day and then got out into a Honda, they were a bit different but I soon got the hang of it.
There's the impossible working without issue, ask yourself.