To begin with, the most important factor for one to succeed is undoubtedly the technical understanding of the concerned field, without which no one can actually survive in a job. Every job demands core technical skills, in some way or the other. Here language proficiency can surely be an additional advantage but not in anyway, an essential condition all the time. For instance, a staff nurse working in a hospital ICU, is expected to take care of the assigned patients for which the clinical knowledge and ability to rightfully interpret the prescription of the attending physician are the required qualities. An excellent English communication, although appreciable, is not that necessary as long as instructions are correctly comprehended.