"likely" is more suitable to the context.

What is the standard for deciding enough repetition then?

Does it mean that final field study is more like field experiement, which have more intervention than pure filed study?

Sometimes browser take care of translating text labels in objects. For example, "File input box" shows text label "파일 선택" when a user is Korean, however it shows "choose file", if a user is American.

It means that the user can decide wheter to render caption on the video. The contrarst term is "open-captioning" which means that the caption is always shown on the video.

https://en.wikipedia.org/wiki/Closed_captioning

I didn't noticed that alt feature is for screen readers. I thought that the purpose of alt was to give alternative word if the browser failed to render the image.

Isn't it contradictory to the previsous sentence? The previous sentence said that font knows "how to draw A" but this phrase gives contradictory argument.

I can't understand why longer lines helps to compensate for poorer resolution and legibility. Can anybody explain it?

It reminds me of the external consistency that we learned before!

On the other hand, I think dark background has also some advantages. When I work in terminal or code editors, I prefer dark backgrounds because I feel that my eyes are less tired with dark backgrounds than white ones.

I think boldfaced title is the matter of size or shape. The value of the black color is not changed even if the title become boldfaced.

Change to "the Gestalt pricnciples of grouping"

I think we can also recognize infinite variety of size. Why does it have at most 10 levels then?

People usually relate red with fire and blue with water or sea. So people think that red is hotter than blue.

I think it lacks perceived affordance because it's hard to think about dragging without tracking state. (Actually dragging is possible in touchpad.)

It is because the movements done outside of table (for mouse) should be considered as illegal.

For implementing multitouch gesture, does both caputres should be used at the same time or just using either one is enough?

Does "move forward" or "move backward" button for an oject in PowerPoint might be the example? I'm curious about wheter PowerPoint also uses View tree and z order.

In computer graphics, this process is called "culling". There are two kinds of method that excludes the parts that should be rendered. The first method is "culling" that excludes all non-overlapping bounding boxes. And the other methods is "clipping" that excludes partly overlapping bounding boxes. I think the terminology "clipping" should be divided into "clipping" and "culling" for the area of computer graphics.

For the item "Corsair..." it is currently out of stock. However, a user can still add this item to the cart. The system should show that it is not possible to add this item to the cart.

How does "positive" ciritical incidents give potential usability problems? Can anyone give an example for this?

This pharse is weird. Fix to: give the user chance to use bathroom

Does it mean that field study should be used with "real" products? not with mere prototypes?

I didn't understand what does it mean. Can anybody explain what does in mean in this context?

No it isn't because iterative design set various goal for the system and tries to meet some of them at each cycle. However, waterfall design tries to meet all the goals at the very first.

Does this goal have to be always measureable? Then how can we explain the logic for setting the time as "30 seconds"?

Funny idiom. If your actually bite your tonuge, you will die...

It's not on the right, it's on below

Does user in this "user-test" means real customer of the service? Isn't it too costly to recruit real users and conduct user testing for paper prototype, not for real prototype?

I exactly experienced feeling like this before. Even though I noticed that the specific part is not necessary, it's really hard to actually discard it because I put a lot of effort on that part.

I think that the example on the left and the content of the text doesn't match. There are no id and src attribute in the left example.

Bootstrap and Materializecss might be one example for view component.

references: http://getbootstrap.com http://materializecss.com

Does controller also listens to event generateed by model? But the figure only depicts that the view receives change events from model. Which one is right?

Isn't event just an object of listener patterns like publish-subscribe or observer?

It is possible to demonstarte it by using "position" attribute in css. position: fixed makes it possible to the render childeren out side their parent. reference: https://www.w3schools.com/css/css_positioning.asp

I don't understand why this is the easiest example here. Is it just because random letters chunked in a group is familiar than random numbers chunked in a group?

Previously, I thought that the actual spelling for these websites are "fishing" which is the metaphor of deiciving people. But this word actually derived from "fishing". I think this kind of word is really interesitng. (You may find the details here: https://en.wikipedia.org/wiki/Phishing)

Can you explain what does attention means here? Metaphor of thread doesn't seem to explaint it well...

I think it's similar as hard disk. As other contexts uses computer as metaphor, I think it would be consistent to add hard disk metaphor here.

This word should be deleted.

I think we should also consider restricted resources. Making many prototypes will give better quality but cost more time and money than just making one.

I didn't understand the context. Why is this task pays off more in online than offline? I think online can more efficiently do searching and hyperlinking than offline.

I think this paragraph is almost same as the first paragraph of this page. I think the content should be changed to "Identify the User's Goals" which is written in the left summary.

It's also related to the leanability dimension!

Phone number can also be another example.

Have we talked about mode error before...?

Why all the Bs are denoted as BBs, which is double click? I think it's enough to click just once.

Is B also a primitive operator? The previous words say that there are 5 primitive operators and they are KPHD M. If B is also the case, the number of primitive operators should be 6.

These days, computer games use linear menus to enable users to control a lot of skills. It is possible because users become more familiar with the linear menus and linear menus with keyboard control gives much more efficiency than pie menus. However, smarthpone games, especially action games, usually use pie menus as skill menus. It is because smartphone games have only touch-screen interface, which means that pie menus mostly give more efficiency than linear menus.

If D = S, the equation becomes a + blog2. I think there must be more specific reasoning for this.

There is no graph here.

Why does the aggregation belongs to the efficiency technique of the browser address bar? I don't think that the users can handle and control multiple urls at once.

It helps in terms of learnability. As we learned in the previous materials, autocomplete suggests the query that is mostly searched by other users, which gives insight to the other users' goals. It helps to solve the learnability problem related to the keywords.

Also, especially with this autocomplete picture that shows the number of search results, I think it also shows the property of information scent.

showing -> shows

I think that the arrangement of the slides doesn't match to that of the readings. The slides are in rectangular arrangement but the readings are in vertical arrangement.

I think that pushing the handle on a segway (lean forward) makes gives a feeling of pushing the segway forward and vice versa.

Share good example for the meaing of hard returns and soft returns. http://www.dummies.com/software/microsoft-office/word/how-to-use-soft-and-hard-returns-in-word-2010/

I didn't really get the meaning of this example, why does displaying the menu in drive-through window helps to solve the fundamental problem in natural-language based interaction?

It's quite similar to the concept of Abstract Data Type(ADT) in data structure!

If there is a table that summarizes the paragraphs, it would be helpful to understand the contenet easily. (row: CL, MF, DM, SD; column: Learnability, Error messages, Efficiency, User type, Synchrony)

hi