Why Time Travel is not Paradoxical according to David Lewis Essay Example for Free

Why Time Travel is not Paradoxical according to David Lewis Essay The grandfather paradox is one of the most well known examples of a paradox associated with time travel. Supposing that a person, say Henry, wants to kill his grandfather, and Henry wants to travel back in time to do so. If Henry does succeed in killing his grandfather at a time when the grandfather has not yet fathered the offspring that would eventually become Henry’s parent, then Henry would never have been born in the first place, so how could he have traveled back in time? David Lewis argues that time travel is not paradoxical. His answer to the grandfather paradox is that, in the first place, Henry would not have been able to kill the grandfather. In other words, a time traveler who goes back to the past cannot change the past. According to Lewis, Henry—or any time traveler—would simply be part of the reality of the past. Henry would be part of the past as a time traveler—in other words, there is only one past in the first place, and that past has always included the time traveler Henry. Thus, there are no changes that can be done to the past, because the fact that he time-traveled would have been true even before he decided to do it, and even before he existed. Every point in time is equally real, and nothing can change it. Another paradox is the causal loop, to which Lewis’ solution applies as well. An example of a causal loop is when a person receives the plans for a time machine from a mysterious stranger. This person creates the time machine, travels back in time, and gives his younger self the plans. The problem here is the origin of the time machine plans. Where did they come from? According to Lewis, the plans would simply have had no cause, in the same way that the universe, or God, exists uncaused.

Descriptive Essay - The City Dock :: Descriptive Essay, Descriptive Writing

The perfect place in the city is one that is incredibly versatile – it may be bustling with activity one minute and nearly deserted the next. The city dock has been a mainstay of the city for as long as anyone can remember, and it has a different effect on everyone. Everyone can appreciate the dock for his or her own reasons. One of the best aspects of the city dock is the amount of activity that can almost always be found if you know where to look. Every year the Great Dock Canoe Race – an event in which teams of two people race a canoe across the bay - is held at the dock, and you’re guaranteed to find many teams racing their canoes in the bay. Hundreds of people crowd the dock to watch and then move next door to the Dock restaurant to celebrate with the winning team. Right off the dock is a tiny stretch of restaurants and quaint shops, and then of course there are the boats. Of the dozens of boats - from sailboats to houseboats to leisure ships, from red to white to yellow - that are anchored at the city dock, you’re sure to strike up a conversation with one of the friendly people who live here, and it’s a great place for casual parties with friends. On the last Fourth of July, my friends and I gathered on the top deck of my father’s houseboat to watch the fireworks d isplay that lit the sky. It offered an amazing vantage point from which we could see across town. The city dock, however, can also be a solitary place. When you sit on the top deck of a boat, it seems like you are all by yourself in the world. From that height, you have a birds’ eye view of the dock and the bay, and though there may be people around the dock below you, you are removed from their action. It’s the best way to take a break from the stress and activity of the day.

Personal Reflection and What You Have Learned From Field Experience

We had visit to an orphanage named Rumah Hope which located in Paramount Garden , Petaling Jaya on 2nd March. We entered the premises of the orphanage with a sense of exciting and strange, as more than 50 pairs of mischievous eyes peered at us, and we made our way to the kitchen. The event started with introduction among us . The activities followed with Goy singing two beautiful songs. His voice touched the chord of each one present in the room.It followed with fun games like ‘Ice and Water’ where all the kids as well as the team members had a gala time running around. We created various type of activities for the kids and we could feel the happiness from them. I was the photographer at the moment and of course , I took a lot of photos. By this time, everyone in the room was hungry to the core. The kids were provided with a sumptuous meal of KFC funded by the us.One important detail which could have been missed was the way the kids prayed before commencing their lunch w as a prayer which was led by a small yet sprightly Jason. The visit to the orphanage not only showed us the ugly truth about life, it also gave us something to look within ourselves , that we were blessed in our present circumstances. The experience was harsh, like a slap on the face and yet it the bright smiles on the faces of each and every child on that day did more than just lift their spirits and look at the brighter side of what we had done for the children.

Tv Addiction - 876 Words

The word â€Å"addiction† is often used loosely and wryly in conversation. People will refer to themselves as â€Å"mystery book addicts† or â€Å"cookie addicts.† E.B. White writes of his annual surge of interest in gardening: â€Å"We are hooked and are making an attempt to kick the habit.† Yet nobody really believes that reading mysteries or ordering seeds by catalogue is serious enough to be compared with addictions to heroin or alcohol. The word â€Å"addiction† is here used jokingly to denote a tendency to overindulge in some pleasurable activity. People often refer to being â€Å"hooked on TV.† Does this, too, fall into the lighthearted category of cookie eating and other pleasures that people pursue with usual intensity, or is there a kind†¦show more content†¦A heroin addict, for instance, leads a damaged life: his increasing need for heroin in increasing doses prevents him from working, from maintaining relationships, from developing in human ways. Similarly an alcoholic’s life is narrowed and dehumanized by his dependence on alcohol. Let us consider television viewing in the light of the conditions that define serious addictions. Not unlike drugs or alcohol, the television experiences allows the participant to blot out the real world and enter into a pleasurable and passive mental state. Th eworries and anxieties of reality are an effectively deferred by becoming absorbed in a television program as by going on a â€Å"trip† induced by drugs or alcohol. And just as alcoholics are only inchoately aware of their addiction, feeling that they control their drinking more than they really do(â€Å"I can cut it out any time I want – I just like to have three or four drinks before dinner†), people similarly overestimate their control over television watching. Even as they put off other activities to spend hour after hour watching television, they feel they could easily resume living in a different, less passive style. But somehow or other while the television set is present in their homes, the click doesn’t sound. With television pleasures available, those other experiences seem less attractive, more difficultShow MoreRelatedTv Addiction822 Words   |  4 PagesIn her essay, Tv Addiction, Marie Winn compares television addiction to other harmful habits, and tries to convince the reader that heavy television viewing is as harmful as drug and alcohol, and it should not be viewed differently than other serious addictions. In fact, the most important factor that backs up her argument is her simplified definition for the word addiction, which is a tendency to overindulge in some pleasurable activity. (608) However, thinking logically, we could seeRead MoreTv Addiction Essays1048 Words   |  5 PagesTV Addiction Marie Winn makes a convincing argument that watching too much television can be considered an addiction. Television has become a way of life for most families. 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Addicted?   What a strong word.   Technology isn’t a drug.   Ã‚  So, how can it be an addiction?   Ã‚  Ã‚     Ã‚  Ã‚   According toRead More Internet Addiction ( Pathological Internet Use ) Essay1313 Words   |  6 PagesInternet Addiction ( Pathological Internet Use ) The Internet has become one of the most universal methods for communication with over 100 million users worldwide. From e-mail to the possibly billions of web pages, there is an infinite amount of information flowing. And another enticing aspect of the Internet, is the opportunity to interact with other people. Chat Rooms and MUD (Multi-User Dimensional) games offer the person the ability to talk and mingle with others online. But with