Emmett Till Biography. The brutal 1955 murder of teenager Emmett Till, and the news coverage it drew, helped ignite the civil rights movement in America in the 1950s. Exactly what Emmett Till, a 14-year-old African American boy, said or did to offend Carolyn Bryant, a 21-year-old white woman working in a Mississippi grocery store, is unclear; he may have whistled at her.
There's no major difference. The benefit of the default instance is that you connect just by specifying the server name (eg, MYSERVER), whereas a named instance will require an instance name as well (eg, MYSERVER\SQL2005). If you're only going to install one version of SQL Server on this machine, go with a default.
For example you can have SQL2005, SQL2008, SQL2012 as separate named instances of SQL Server. You can also have the same version installed as different Instances such as SQL2005DW (for datawarehouse), SQL2005_PAY (for payroll), SQL2005_ERP etc etc. You can have one (and only one) instance known as the DEFAULT instance, Every other instance on the same machine must have a name (16 characters).