Good Design
- Wrist Watch

A wrist watch is universally used for telling the time of day. This device consist of the analog watch itself and a strap. Watches has been used by people for centuries now. It is one of the most creative invention ever. Now there are different type of watches from different brands. The famous brand of watches is Rolex. Watches is used by everyone doesn’t matter which class of people you are.

For the Gulf of Execution, the user uses the watch to tell the time. The user can adjust they time on the watch simply by turning the analog on the side of the watch based on the the user’s own time-zone. The watch is very versatile and can be used on both hands. For the Gulf of Evaluation, the user can tell the time of day in their own time-zone just by looking at their wrist.
The seven fundamental principle of design is Discoverability. A watch is easy to use as the function is very straight forward. You just have to turn the analog to set the time. Another fundamental principle is Affordance. In terms of price, a watch is affordable for people. That’s why almost everyone is wearing one today.
2. Earphone

Earphone is a device that converts electrical energy into sound waves and is worn over or inserted into the ear. This device is very common to youngsters these days as they like to use them for listening to music. An earphone can be use on many types of device like Walkman, iPod, Phones, and even on laptops. It is very useful in public if you want to listen to music without bothering anyone.

For the Gulf of Execution, the user wanted to hear music in public. The user can just plug it to a listening device like their phones and just turn the volume up without people being annoyed or noticing. For the Gulf of Evaluation, the music can be heard only by the user. Plus, the user can hear the music clearer by adjusting the volume.
For the seven fundamental of design, discoverability is one of them. Earphones are easy to use, the user would just have to plug it to a device and they are good to go. There are no complication in using earphones. Next is Mapping, earphones are devices that don’t work on their own. Users would need to connect them to another device like Phones. So when the user would want to change the music to a specific music that they want to listen, they need to change it on the phone.
Bad design
- Oven

An oven is a thermally insulated chamber used for the heating, baking, or drying of a substance, and most commonly used for cooking. We can find oven in almost every kitchen these days. We can cook anything using the oven and that’s why it is essential to have an oven at home. We know an oven is a good design because it is easy to use as user can just put the food in the oven, adjust the temperature and then set the timer. As for this particular oven that I have at home which is in photo 3, it’s not stated what is the function of the first switch on top, as I can only understand the ‘OFF’ button. This oven is an example of a bad design.

For the Gulf of Execution, the user first need to find the food that he or she wanted to heat. Then place the food in oven. Then set the temperature and set the heat location and lastly set the timer. For the Gulf of Evaluation, the food is cooked evenly. The food will not also overcooked or be undercooked because of the timer set for the oven.
For the seven fundamental of design, the oven has a conceptual model. As we all know the function of an oven is used to heat food or cook food. It’s not complicated if the function is stated more clearly. Next is constraint, the oven can only cook one type of food at a time. If we tried to cook other food at the same time, one of the food will be either overcooked or undercook.
Suggestions for improvement
The oven need to state it’s function on the switch as it will be easier for user to know. The signs are not clear enough for user to know the function because the signs are not universally used,
2. Pants label

Pants is an outer garment covering each leg separately and usually extending from the waist to the ankle. We wear pants to cover the bottom half of our body. In this millennia, pants are used by everyone. Not a single person goes out their house without wearing pants. It is a must to wear pants if not you might get arrested by the police. Now, I’m going to talk about the pants label. The label on your pants shows the size of the pants. The label above measure the waist in cm instead of inches. It might not be a bad design in some country but in our country we are used to measuring our waist with inches. Therefore I think this is a bad design.

For the Gulf of Execution, the user wants to cover the bottom half of his body. Then the user have to find the right size of pants to wear then put it on. For Gulf of Evaluation, the user needs to wear pants in order to go out. The user will look decent and stylish in pants.
For the seven fundamental of design, pants has affordance. Pants require user to put it on in order to use them. Next is discoverability, pants require user a just a few step to put them on.
