Specific language impairment (SLI) is diagnosed when a child's language does not develop normally and the difficulties cannot be accounted for by generally slow development, physical abnormality of the speech apparatus, autism spectrum disorder, acquired brain damage or hearing loss.
Perfect competition. A perfectly competitive market is a hypothetical market where competition is at its greatest possible level. Neo-classical economists argued that perfect competition would produce the best possible outcomes for consumers, and society.
Only a few companies would have the highest market share, leaving little to no room for others to enter into the market. You see, competition is the struggle between businesses for the same set of consumers. For the most part, it is fair. Businesses use strategies to entice a consumer to try their products or services, hoping to gain a long-term customer.