Sherlock Holmes

Product as men’s servant

Design is a user-centric activityTo design a product is to give-birth to a

servant that help the userImagine what a servant will NEED TO

KNOW if he/she want to serve well

Example: Microwave oven

Is my door closed?Does the user want me to work now?What power-level and time the user

wants?Is this the power-level and time the user

wants?Is the food done?

Example: Microwave oven

Is the door latch in position?Is the start button pushed? Does user stop

me when he/she saw the light is on?Which button does the user push?Does the user change anything when

he/she saw the readout?Does the moisture level in the chamber

change?

Product events

Apart from knowing what is its own condition, a product also need to know what is happening

Knowing what is happening will let the product take action to change what will happen

Temperature Graph of Rice Cooking

Adapted from: http://www.mitsubishielectric.co.jp/home/suihanki/riyuu03_hi_b.html

Water Absorption of Rice Cooking

Adapted from: http://www.mitsubishielectric.co.jp/home/suihanki/riyuu03_hi_b.html

Example

The house knows who is entering the bathroom and what he want

The coffee-maker knows the timeThe alarm clock knows you are going to

get up soon

Activity

Example

If between 1:00 – 6:00 and one stay in front of door for 3 minutes before inserting the key then he is a theft