Problem: Article: Especially on the harder difficulties, melee weapons will only get you killed. Instead, stay back and pick off enemies from afar. Use your shoves to keep some distance, and, whenever you're in the open, use a pistol or rifle to thin the herd before they get too close. Left 4 Dead is a constantly shifting game, and Infected will appear in unexpected places. Zombies spawn at various points, and they are on a timer. Special Infected like Hunters and Smokers can appear anywhere but usually, come with a horde of Infected to cause maximum damage. There are, however, ways to predict when enemies are coming:  Pay attention to the music -- it will start to swell and get tense as enemies build up out of sight. Turn on subtitles. You can often read things like, "coughing sounds" or "noises of the horde" in advance, making it easier to predict incoming groups or specials. Know the three stages of an attack. Build-up, as the music swells. Peak, when the big group descends on you, and Rest, after you've defeated them and have 1-2 minutes to relax. When in crescendo events, or if you just need to catch your breath, choose spots with limited entryways (like rooms with only 1-2 doors or windows) or high areas where you force the enemy to bottleneck. Bullets pierce enemies and hit the Infected behind them, meaning you can mow down large groups quickly and conserve ammunition. Shooting down stairs, ladders, and in doorways can make big crowds much, much easier to handle. Still, keep moving when possible. Holing up for too long drains supplies and can leave you open to attacks by Boomers and Spitters. Ammo is your lifeblood, so don't go draining it. When enemies are at a distance or are easy to deal with, switch to a pistol or melee weapon. Running out of shotgun shells during an intense moment can cost you your life. Medkits are valuable and should be used as such. After your first knockdown, your vision becomes monochromatic (loses color), and you move slower. This is the time to use a Medkit. Otherwise, stick to pain pills and adrenaline whenever possible. If you're approaching a crescendo event and have less than 40 health, now is the time to use your Medkit. Crouching increases aim and is essential if firing at incoming enemies. Whenever you can, crouch and fire, then get up and move as you go. In muddy areas, like "The Parish," you actually move just as fast crouching as standing, so the benefit in accuracy has no trade-off. In the mud and swamps, crouch the entire time. In Versus mode, four players get the chance to play as Smokers, Boomers, Hunters, and more while fighting against four other human players. Playing as Infected is practically its own game, but the best advice is to think about all the ways you've died as a human. What sorts of attacks stranded you from teammates, caught you off-guard, or otherwise dealt more damage than you could handle?  For the best results, use your teammates to coordinate attacks together. A Boomer can vomit, bringing in zombies that allow a good Spitter to trap pressured players in a corner, for example. Use surprise to your advantage. Let them run to you and hit them when they're distracted.
Summary: Keep your distance whenever possible. Predict the "flow" of the hordes by learning how they spawn. Use choke-points and high ground to your advantage. Conserve ammunition whenever possible. Don't use medkits until necessary, usually after incapacitation. Crouch whenever possible. Know the strengths of each Infected on Versus mode.

INPUT ARTICLE: Article: If you refer to a concept by a certain term in your paper, use that same term consistently. For instance, if you are discussing Harry Frankfurt's first-order desires vs second-order desires, refer to them that way throughout the whole paper, rather than switching to different terminology such as “primary wants” or “inner desires”. Read through your paper from beginning to end to ensure that it is easy to follow and that each thought is fully explained. Make sure each example connects to the point you were making immediately before, then transition into the next argument. Explain yourself fully, but do so as concisely as possible. Use simple prose whenever you can, so that the reader is easily able to follow you from point to point. As with any paper, you should end with a concluding paragraph. Finish with a brief summary of the points you made in the body of the paper and a restating of your thesis. You should not offer any new information in your concluding paragraph; all of the information you want included in your paper should be presented in the body. Try reading your paper sentence by sentence starting at the end and working to the beginning. This will help you read more slowly and you'll be more likely to catch any errors.

SUMMARY: Be consistent in your language. Make sure you have clearly explained your thoughts. Round out your examples. Be concise. End with a brief conclusion. Proofread your paper carefully before you turn it in.

In one sentence, describe what the following article is about: A psychopath may end a conversation with a statement that opposes what they said at the beginning. Dishonesty and pathological lying is a sign of psychopathy. The person may talk about how disrespectful it is that your coworker always shows up late and does things they are not supposed to, and then moments later the person will break the rules without apology. The contradictions may not occur within the same conversation, so keep track of what is said over time. Log in a journal important information that you think might later be contradicted. Psychopaths talk excessively about the people in their lives because they view them as extensions of themselves. A psychopath will lie about the people in their life; they will even lie about their children.   Psychopaths are prone to giving out half-truths or disinformation. They have no problem keeping important information away from you. If the person has told you stories of betrayal or tragedy to explain their damaged family, friend, or romantic relationships, see if you can verify these stories independently. A psychopath refuses to take responsibility for their own actions and will blame others for things they have done.  If there is irrefutable evidence that they are at fault, they may then admit it, but will show no remorse.  A psychopath will also try very hard to control the narrative by professing an altered version of events, which may be very different from what you experienced. This can cause you to question yourself and is known as "gaslighting." On the other hand, because the psychopath displays a grandiose sense of self-worth, they may brag about or inflate their achievements, or even take credit for the work of others. Notice if they quickly and smoothly change topics when you broach a subject that might reveal their anti-sociality. They may rapidly dismiss discussions of their odd behavior by accusing you of causing too much drama, or by insisting that you are mentally ill and need professional help.
Summary:
Watch for contradictions in speech. Double-check what is said. Take note of scapegoating. Watch for quick changes in conversation.