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To use et al, which usually in scientific citations, you need to have multiple authors in a research to begin with. If there were only two authors, you state their last names and no need for et al's. Tak payah lah excited sangat nak guna et al tu kannn.
Et al comes from some old Latin word which means 'and others'. So yeah, it is quite logic for using et al for more than two authors in a citation. Well, bayangkan lah, in a single research ada berapa ramai scientists (cuz seriously memang tak mungkin only one researcher je yang involved dalam one research), and every single time you mention their citation, you have to mention all their names. Penat kot. Dah lah ramai. So, nak memudahkan kerja, you just mention et al after the first author's last name.
Example : Paul Gibson, Sandra Cooks, Dowell Harrington, Steve Sheridan, Samuel Templeton, Joshua Yang, Han Seoul-Oh (still couldn't get rid of the fact that Han's full name is Han Seoul-Oh, like, Han Solo. Geddit? It's a star wars thang. And them people in Fast & Furious NAILED it), William McMiller and Areefa Suleimen. These scientists were researching about new species of fungi that have photosynthetic properties in planet Mars. Damn thats a helluva lotsa name, right? So, we simplify it as, Paul Gibson et al. In other words, you were saying things like, Paul Gibson and others. Yup, pretty neat yeah? Yep, so it's done!
Postscript 2 : All names of scientists and that research are created fully by me. For example purpose only. No harm done.
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