Design
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Background: When an action is routine and uninteresting (e.g. locking a door, turning off a light, etc.), it’s sometimes hard to remember if you did it at all. The issue: Occasionally, people find themselves wondering “did I close the garage when I left the house?” or “did I remember to lock the car when I…
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Background: Diet fads come and go, but most have at least one element in common: the requirement that individuals be deliberate about what they eat (rather than ravenously consuming everything like a starved beast). The issue: Unfortunately, it’s difficult to have self-control when food is delicious and plentiful. Thus, most people eat larger portions of…
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Background: It is well known that washing hands for a surprisingly long time (30 seconds!) substantially reduces microbial contamination (Figure W1). The issue: Unfortunately, people generally feel, psychologically speaking, that their hands are clean immediately upon rinsing them with even the slightest hint of water. The challenge, therefore, is to encourage people to wash…
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The issue: Sometimes, it’s hard to get out of a comfy bed and face the cruel and merciless world. Proposal: We can solve this problem by making a bed that becomes progressively less comfortable as the desired wakeup time arrives. Certain mattresses already have the ability to dynamically adjust their firmness (for example, the “Sleep…
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Background: In programming, there is the notion of “code smell”—a subtle indication that something is terribly wrong in a piece of source code, but without any (obvious) actual mistake. For example, if you saw the following: print(“E”); print(“RR”); print(“OR”); print(“!”); instead of print(“ERROR!”); that would be a good indication that something extremely bizarre was going…
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Background: In many situations, such as political debates, the first day at a new school, or the first day on a job, making a good first impression is extremely important. The issue: Unfortunately, it’s hard for a newcomer to reliably make a great first impression if other people aren’t already predisposed to like them. Proposal:…
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Background: One of the most common complaints about nearby construction is the potential for new structures to block the views of existing residents. The issue: Existing residents in a neighborhood occasionally attempt to block nearby construction (often coming up with extremely implausible reasons as a smokescreen), when the real reason is that they just don’t…
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Background: In many cities, there are a large number of “almost-a-parking-spot” locations (for example, between two driveways) that can only fit an extremely small car. Additionally, most popular models of small cars have gotten substantially larger over time. For example, a 1959 Mini Cooper is 120 inches long, while a 2005 model is 143 inches…
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The issue: When a person takes a shower, it is often the cast that some fraction of the water leaving the shower head lands directly on the shower floor without hitting the shower-taker (Figure 1). This “off-target” water is totally wasted. Proposal: Thanks to advances in computer vision and inexpensive electronics, it is now possible…

