In fact, they used the word element to talk about anything that was basic. Ancient Greek philosophers, for example, thought that everything consisted of four elements: earth, fire, water, and air. Other philosophers thought there were only two elements: sulfur and mercury.
The Internet was expected to eliminate search costs (Pereira 2005). For example, electronic commerce was predicted to cause disintermediation as search costs become low enough for end-consumers to incur them directly instead of employing retailers to do this for them.
Creating a search strategy. A search strategy is a well thought out plan to search for information. It is particularly important when using electronic citation databases, for example, CINAHL, BNI, Medline or ASSIA, as it keeps you focused on your topic and within the boundaries of what you want to search.