 Welcome to module 8 in the software engineering course, which will deal with human factors in software engineering. Now, one of the reasons why I, for example, am working in software engineering is that in contrast to more theoretical topics, in the end of the day you have to develop software in a team, and very often this boils down to human factors. So, you can have brilliant processes, you can have really good people, you can have the best technology, but if they don't work together in the right way, you will simply not end up having a good product, or you will not have it on time. So, this is why also we dedicate quite some time here on human factors in this course. In particular, we'll pick a couple of topics that I think are important. One of them is the topic of cognitive bias, and cognitive bias is the way in which a person and individual understands certain things, like events, facts, other people, and this understanding is based on his or her own experiences, his or her own beliefs, and the important thing about it is that in many cases this does not have to be an objective picture. So, we form our own subjective picture based on our background, basically. So, we'll look into this, then we'll look into the topic of ethics, which is becoming more and more important in the everyday software development, because there are many different things that can go wrong, starting from maybe how we do teamwork, how we do hiring, up to how do we develop our products, what do we do with them, what kind of users are we having, and so on. And then finally, we will look into the topic of productivity. So, a bit of a more hands-on thing, how do we get software developers to be productive, and traditionally this was very much a technical topic. Can we give them the right tools? Is the screen in an ergonomic way? Is the whole workplace ergonomic? But more and more people also start looking at the more human factors around that. For example, is there psychological safety in the team? Are they actually communicating well, for example? So, these are the three topics we'll cover. The module itself also has a part of diversity, which this year we'll have as a part of a guest lecture. So, I do not list it here. Okay, so let's go right in and talk about cognitive bias first.