 So thank you very much Professor Leibmeister first of all for coming to Bremen and thank you very much for giving such an excellent keynote speech My question would be what makes crowd working different from regular work. So it's a very basic question, but it's still relevant I think there are mainly three things that make crowd work different from other work settings. First of all, it's a very low Access to work opportunity. So very often you just have to connect to the web open The browser and you're ready to go and work. You don't need to look for work or anything else The second thing is you can use the web. So anywhere any time And the third thing is you choose you choose what to do when to do and how to do it and That's basically what makes it interesting to many people And what would you say are the most relevant research questions right now? I mean research question that are you not working on but what you think that should be answered Hmm Well, one of the grand challenges around crowd work is Just to get a better understanding on how to build good crowd work systems So how to design work systems? that are economically performing well so that leverage on on success in the market and at the same time allowing for good working conditions and for interesting Activities for the people to work with we don't have that much knowledge about that systematic design principles and how to Basically have an engineering view on those social technical systems. So that's one of the grand challenges that I see And do you think it makes sense to have a conference like the one in Bremen where lawyers Psychologists IT people talk together or do you think that they they actually live in different worlds and they shouldn't talk to each other? Well, they definitely do live in different worlds, but that doesn't mean that they shouldn't be working together I think that the phenomenon of interest that the crowd work By definition cannot be addressed by one discipline. So if we want to be in a in a in a good position To understand what is happening there to help others understand what is happening that we need those interdisciplinary collaborations and On the other hand, it's also a challenge to get to a level of a common and shared understanding of what What you're working on what the others are working on so interdisciplinary sounds always very nice, but actually it's very hard To work interdisciplinary in a very well-performing way So that's one of the reasons why I congratulate the University of Bremen of hosting such an event And I wish you all the luck in the world to get to this level where you actually strive As interdisciplinary teams knowing that that is the actual challenge. Thank you very much