Please follow these guidelines for your discussion posts: . Write at least 150-300 words. . Make sure your posts are grammatically and mechanically correct. . Address all parts of the prompt. - Provide at least one example to support your response. (Example choices include an anecdote, a statistic, and/or textual evidence.) Source Ea An embarrassing discovery during the construction of a bridge. During the construction of a new bridge across the Rhine, between the German and the Swiss part of the town Laufenburg an embarrassing disc0very has been made. There appears to be a height discrepancy of 54cm between the two outer ends of the bridge. 0n the German side of parts divided city the latest part of the access road to the bridge has been built lower then was intended. It sounds crazy, but the problem lies in different height systems in the countries involved. The Swiss take the mean sea level of the Mediterranean as the base, the German calculate with respect to Normal Null which is based on the North Sea. "The difference of 27 cm. was certainly known, and everything had been drawn up correctly on paper\" explained Beat von Arx, project manager at the department of Civil Works of the Swiss canton Aargau. Things went wrong during the implementation; on the Swiss side they had to add 27 cm., but instead they subtracted 27cm. The mistake only became apparent to the constructors as the crossing neared the German bank. The project costs will be shared between the participants; however the construction will be carried out by the Swiss entirely. "It will cost the taxpayer nothing\" assures von Arx. Any excessive costs will be covered by the engineer's office insurance. The construction ofthe new bridge started in 2002 and the completion is planned at the end of 2004. Freely translated from; Stuttgarter Zeitung On-line 20th January 2004 In the end everything went well with the Hochrheinbrucke, everyone can see it when sailing underneath Illustration ofJeroen Bons for Schuttevaer weekly magazine In 2002, engineers from Switzerland and Germany planned to build a bridge connecting their cities across the Rhine River. During construction, they noticed that the heights of the bridge differed as they approached the meeting point over the river. As the bridge approached the German river bank, the height difference was observed to be 54 cm higher than expected. How did this happen? A classic mistake of subtracting instead of adding. At the time, it was common knowledge to engineers involved that the countries measured sea levels differently. By German measurements, the sea level was considered 27 cm higher than what the Swiss considered the sea level. When accounting for this difference, Swiss engineers subtracted 27 cm from their measurements to meet the gap resulting in the German measurements being 54 cm (double the original) higher. Swiss engineers should have added 27 cm to their measurements to meet the proper height. A costly mathematical mistake for the engineers as well as a reminder to attend to precision in calculations and conversions. Source E) Unit A Discussion In your ALEKS work for this unit, you've been reviewing numerical and algebraic skills that will be used throughout this course. In this discussion, you'll share a case of numerical or algebraic skills gone wrong! Try to nd a real-world example of a mathematical mistake and present it to your classmates in your rst post. Explain in detail why it's a mistake. If you can, correct the mistake. View the example below to guide you on the original post. You can look for your own examples of mathematical mistakes around your neighborhood or in pop culture (on TV, in movies, or on social media), or you can search for an example online. If you use something from a website, you must cite your source in your post