Pronouns
Like active voice, pronouns were once unacceptable in engineering writing. According to some engineers, using pronouns made writing more "personable" and less "scientific." However, this trend is changing. Some instructors, publications and industries now accept pronouns in written documents. For example, "We tested each sample," as opposed to 'The sample was tested." Before you begin writing, always determine whether or not it's acceptable to use pronouns.