Essay lacking authority

Why does this short essay lack authority?

• Because of the spread of the world’s economic crisis, more and more people are asking for a single world currency system. Therefore, it is a good idea to implement this.
• First, the risks involved in foreign Exchange would no longer exist if we had a single world currency. In international trade, enterprises always face exchange rate risks. The loss caused by the floating exchange heavily counteracts their profit. Sometimes trading loss occurs in a very short time.
• Second, it would be very convenient if we had a single world currency; people would not need to exchange money or pay service charges in the future. Everybody wants convenience above everything else when they travel, so one currency is better.
• Last but not least, the competitive power of enterprises would improve if the prices for the goods and services were in the same currency. It would be beneficial to social development.
• Some say that it would be difficult to manage the currency, but these are the usual pessimistic economists. Given the evidence above, I still think that a single world currency should be put into practice in the future.
• Which of these inappropriate features are present?
• _____ The thesis is based on a generally accepted idea.
• _____ The supporting ideas are not properly organized
• _____ The evidence against the writer's opinion is not considered; the essay is biased
• _____ Claims are made without evidence and in absolute terms (everybody, etc.)
• _____ Introduction and conclusion are not clearly related
• Adapted from
• Learn to write better Academic Essays, page 98 (Els Van Geyte)

Remember:

• when making a claim, refer to sources and connect them to the topic to develop the argument
• use caution: refer to what is possible (e.g. 'there seems to be a trend')
• provide solid evidence impersonally, referring to valid sources, avoiding personal opinions
• refer to counter-arguments and offer evidence against them (e.g., ''Despite the idea that..., ....')