<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
ELI5: Why Do So Many Signs Outside of Businesses Have Burnt Out Letters, and For So Long?<|im_end|>
<|im_start|>assistant
Sometimes, the letters on signs outside of stores stop working because the little lights inside them get old or break. This can happen when it rains, snows, or even if it is very sunny outside for too long. Fixing the letters can cost a lot of money, and the people who own the stores might not have enough money or time to fix them right away. They might also think that people can still read the sign even if some letters don't light up. Sometimes, the store owners might not even know that the letters are not working. Also, many of the signs that are old enough for the little lights to die belong to stores that might not have been making enough money to change them in the first place, so it is more likely that they stay dark for longer.<|im_end|>
<|im_start|>user
Thanks!<|im_end|>
<|im_start|>assistant
No problem. Have a great day!<|im_end|>
<|im_start|>user
Thank you! Can you explain to me why do the sign's letters eventually burn out?<|im_end|>
<|im_start|>assistant
The letters on a sign can eventually burn out for several reasons:

1. Age and wear: Over time, the materials used in the sign can wear down, causing the letters to lose their brightness or even stop working altogether.

2. Exposure to the elements: Signs are often exposed to harsh weather conditions, including heat, cold, rain, and wind. These elements can cause the sign materials to degrade or become damaged, leading to the letters burning out.

3. Electrical issues: Signs with illuminated letters typically use electrical components, such as bulbs or LED lights, to create the desired effect. Over time, these components can fail or suffer from electrical issues, causing the letters to burn out.

4. Vandalism: Unfortunately, signs can also be targets of vandalism, which can result in damage to the sign and its letters.

5. Poor maintenance: Regular maintenance of a sign can help extend its lifespan and keep the letters from burning out. However, if a sign is not properly maintained, it is more likely to experience issues that can cause the letters to burn out.<|im_end|>