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If you are the engineer who build these systems it is totally clear for you how they work. As well it will be often the case that your mental model is differs from the one the users have. This itself is nothing to worry about and it happens all the time. But even if you are very clever you just can spot the problems that it can cause if you test your ideas with your users and see if they act like you intended. | If you are the engineer who build these systems it is totally clear for you how they work. As well it will be often the case that your mental model is differs from the one the users have. This itself is nothing to worry about and it happens all the time. But even if you are very clever you just can spot the problems that it can cause if you test your ideas with your users and see if they act like you intended. | ||
====Ressources==== | |||
* More on [http://en.wikipedia.org/wiki/Mental_model mental models] at the wikipedia. | |||
==Basic Principles& Best Practices== | ==Basic Principles& Best Practices== | ||
There are some principles in interaction design that should be followed. It is no crime to break the rules – but you should have a good reason to do so. During the years quite may of them emerged. I collected and explained the ones that I consider as important and easy to apply. | There are some principles in interaction design that should be followed. It is no crime to break the rules – but you should have a good reason to do so. During the years quite may of them emerged. I collected and explained the ones that I consider as important and easy to apply. | ||
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Often the principle of visibility is ignored to make the interface disappear in order to make the product look nicer. Sometimes it really adds a bit of aesthetics but for the price of easy use and learning. So don't do so. What can be invisible are accelerator mechanisms like shortsćuts as long as the functions they trigger are accessible in an other, visible way. | Often the principle of visibility is ignored to make the interface disappear in order to make the product look nicer. Sometimes it really adds a bit of aesthetics but for the price of easy use and learning. So don't do so. What can be invisible are accelerator mechanisms like shortsćuts as long as the functions they trigger are accessible in an other, visible way. | ||
====Ressources==== | |||
* Very close ot the idea of visibility are two termns dubbed by Don Norman[http://jnd.org/dn.mss/affordances_and_design.html Affordance] it's the probably better term [http://jnd.org/dn.mss/signifiers_not_affordances.html signifier]. | |||
===Feedback=== | ===Feedback=== | ||
[[File:746px-Eric_'slowhand'_Clapton.jpg|thumb|200px|Could Eric Clapton play guitar without feedback? Probably not!]] | [[File:746px-Eric_'slowhand'_Clapton.jpg|thumb|200px|Could Eric Clapton play guitar without feedback? Probably not!]] | ||
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If you release a successful 1.0 Product you can still extend it in the 2.0 version even with features that are not very-super-crucial. But I write this to help you to release a successful 1.0 version so I did put emphasis on the simplicity.--> | If you release a successful 1.0 Product you can still extend it in the 2.0 version even with features that are not very-super-crucial. But I write this to help you to release a successful 1.0 version so I did put emphasis on the simplicity.--> | ||
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