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Software Sucks
- 2. “ Software is eating the world. -Marc Andreessen 2
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- 5. 5 Ariane 5
- 7. $59 Billion Damage through software errors. In 2002. In the US alone. 7
- 9. Software is still young ⊙ First “computers” - 60 years ago. ⊙ Microprocessors - 40 years ago. ⊙ Internet - 20 Years ago In comparison to other disciplines, software development is incredibly young. 9
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- 11. 11 Actual Developer Searching for a Bug
- 12. It doesn’t have to be this wayTools to improve software have been around for decades 12
- 14. Why Developer s don’t Test ⊙ It works on my machine.™ ⊙We don’t have time to test. ⊙ My job is writing code. Leave testing to the testers. There appears to be a general lack of responsibility. 14
- 15. Growing awarenes s Quality Practices like TDD, Agile Development and Continuous Integration are becoming more popular Security A number of severe security incidents raises awareness for secure development. Responsibility Developments like AI and IoT show need for ethical development. 15
- 16. Summary What you should remember: ⊙ Software Sucks. Everything breaks everywhere all the time. ⊙ Software development is still incredibly young. ⊙ With proper practices we can make Software suck less :) 16
- 17. Any Questions? Send a mail to hans- joerg.schroedl@tuwien.ac.at 17
Notas do Editor
- Vorstellung I’m a computer science student Here to tell you that all software sucks. It’s bad. What makes me say that, and reasons for sucky software. Where’s the computer science people at? You might not agree with that statement “Well, my stuff doesn’t suck” But I’m going to tell you why that statement is still true, and why I think software sucks. And the rest of you might not even care about that statement, but you should
- Software is eating the world Nice ominous quote, what did Marc Adreessen mean? Who has interacted with any software today? Mobile It’s everywhere Buzzwords: Internet of Things, AI Wearables
- Think of google glass That’s not google glass Can’t even dress without some piece of software running on your socks or something We can do more things easier faster Software makes us just smarter That’s great Except software sucks
- That’s not a joke, that’s an accurate display of the windows operating system Okay it’s not My favourite is the MS Paint error Because that’s what I feel like if I try new software and it just works. Like that can’t be right Ultimately just a minor inconvenience
- Do you know what the ariane 5 program is? Program by the ESA to shoot satellites into space I love that screenshot, majestic But you know, whats responsible for controlling flight path? Software, and Software sucks, long story
- Long story short Whole Program cost $7 Billion Running for more than a decade The whole flight lasted 37 seconds Had to self destruct Because of a critical error in flight computers Explosion took with it Uninsured satellites worth $500 And that’s not a single incident either
- Thats just a single example Report from 2002 In US alone $59 billion in damages due to malfunctioning software Anually That’s value that just vanishes
- Why does Software Suck? Why can’t we just build things right? Are developers just bad? I like to think not but I don’t know What I do know is that software development is incredibly young.
- Look at it First computers built like 60 years ago Small form computers, microprocessors 40 years ago Internet created now 27 years ago Compared it’s young Take architecture, people have been building houses since forever. Building software, there is still so much to learn And so much to get terribly wrong. Talking of houses, there’s another reason, why I think software sucks
- This is every program ever. I don’t think programmers are stupid Developers want to build working, beautiful software No because building software is hard and its complex And if something goes wrong
- We look like this We have no clue what is going on And then we search for the problem And hopefully, by the time we found it nothing blew up It sucks Is that just the way it is? Should everyone just accept that?
- No. It doesn’t have to be this way. I think so because The tools to build working software have been around as long as software itself.
- How to figure out if that works correctly? Just the basic functions, add, sub, Well I’d turn it on Put some numbers in And if the think bursts into flames you found an error Software not that different Throw some inputs at it To be fair, developers already do that, the problem is systematic test
- Why don’t developers just do systematic tests. Here are some reasons It works on my machine, so it should work right? Its on yours now, so now its your problem. We don’t have time to test - I know a lot of teams and organisations are guilty of that But you have time to fix errors all night? I don’t like writing tests, my job is to code That shows lack of responsibility You are writing the stuff that is everywhere, you don’t want cars to crash and rockets to explode.
- In recent years there is a lot going on in development More awareness for the need for quality Practices like TDD and agile Interconnected world and a number security breaches Makes you think twice about writing vulnerable code With stuff like AI Increasing sense of responsibility Software is shaping society And we should think about what sofware we write and how we do it
- To summarize Software sucks, Everything breaks everywhere all the time Software is young Don’t beat the developers, it’s not entirely their fault There is a silver lining, we can write software that doesn't suck. Or with proper practices, you can make it suck less. Any questions?t
- -Thanks