If we look at jet aircraft, wear depends on the airframe and the engines, and the airframe seems to be the number of pressurize/depressurize cycles as well as the running hours. Engines get swapped out routinely but when the airframe has enough stress it's time to retire the aircraft lest it suffer catastrophic failure. Rockets are different in scale (much greater stresses) but we can expect the failure points due to age to be those two, with the addition of one main rocket-specific failure point: cryogenic tanks.
How long each will be reliable can be established using ground-based environmental testing. Nobody has the numbers for Falcon 9R yet.
Weight vs. reusable life will become a design decision in rocket design.
I get to break this out again:
As the Americans learned so painfully in Earth's final century, free flow of information is the only safeguard against tyranny. The once-chained people whose leaders at last lose their grip on information flow will soon burst with freedom and vitality, but the free nation gradually constricting its grip on public discourse has begun its rapid slide into despotism. Beware of he who would deny you access to information, for in his heart he dreams himself your master.
Commissioner Pravin Lal, "U.N. Declaration of Rights"
Accompanies the Secret Project "The Planetary Datalinks"
I absolutely agree with your statement here:
Open source is not about being free, it is mostly about the sharing of information with the goal of making it better and aiding everyone.
I think the phrase "open source" has gotten overly politicized over the years and for many people is approaching the level of an "-ism." I think the shift to calling it "community driven" software (or the like) better represents the meaning and intent of most projects. Things start to go awry when the that goal gets pushed to the side in the favor of some "agenda" that has little to do with the purpose of the project itself (examples like monkeying around with license agreements come to mind) or when egos and "religious zealotry" get in the way of community communication.
From the End-User standpoint, really the only thing that they care about is that there is a "full featured" product that is free (as in beer) and they won't have to deal with marked-up license fees. Most of the time, if a company goes to a potential client and, for example, says they are going to use an Open Source CMS system, the client basically thinks "Great! My project will be cheaper because I won't have to pay additional license fees."
In all reality, I would venture that the VAST majority of open source projects in the wild that are being used VERY RARELY have that source code looked at by anyone other than the developers that are building the system or those looking to exploit it.
For most people who are more concerned with using a system than how it is built, "Open Source" just means they have to use Google for documentation instead of calling the vendor or reading a manual.
Like others I found the headline confusing. I read it as "Researchers are predicting the use of Wikipedia as a vector for the spread of disease". This may mean that:
- Disinformation and ignorance are diseases.
- Memes and computer viruses are diseases.
- Wilipedia contains information that leads to depression.
- Instructions on Wikipedia lead to substance abuse.
- This is getting entertaining, fill in your own reason here.
One of the definitions I found was:
One who makes great sacrifices or suffers much in order to further a belief, cause, or principle.
I am sure that fits. While SpaceShip II is mainly intended for a non-exploration purpose, the program has resulted in some significant advances in rocketry and White Knight II has significant non-tourism use. These pilots have been involved in other space efforts, I remember the one who was injured from the Rotary Rocket test flights. There are lots of safer ways for these folks to make as much money as a test pilot is paid. They do what they do to advance our progress in aeronautics and space.
Martyrs? Who killed them for their beliefs?
Go away, troll. They certainly died while pursuing something intensely important that they were willing to risk their lives for. The fact that you weren't around to pull the trigger makes them no less martyrs.
Anyway, I have better uses of my time than to waste another minute with you.
We knew what was going on when you ran your anti-IBM campaign, sometimes even positioning yourself as arguing on behalf of our community. It was a way to lend credence to IBM and MS arguments during the SCO issue. To state otherwise is deceptive, perhaps even self-deceptive.
Florian, you would not be devoting all of this text to explaining yourself if you didn't feel the need to paint your actions in a positive light. That comes from guilt, whether you admit it to yourself or not.
Go write your app, and if you actually get to make any money with it you can give thanks, because it will happen despite what you worked for previously. Keep a low profile otherwise because your credibility is well and truly blown and you can only make things worse. And maybe someday you can really move past this part of your life. But I am not holding out much hope.
So, I see this as rationalization.
The fact is, you took a leadership position, and later turned your coat for reasons that perhaps made sense to you. But they don't really make sense to anyone else. So, yes, everyone who supported you then is going to feel burned.
You also made yourself a paid voice that was often hostile to Free Software, all the way back to the SCO issue. Anyone could have told you that was bound to be a losing side and you would be forever tarred with their brush.
So nobody is going to believe you had any reason but cash, whatever rationalization you cook up after the fact. So, the bottom line is that you joined a list of people who we're never going to be able to trust or put the slightest amount of credibility in.
And ultimately it was for nothing. I've consistently tried to take the high road and it's led to a pretty good income, I would hazard a guess better than yours, not just being able to feel good about myself.