The first and most important skill needed for the internet to be a net gain for a persons understanding is the ability to quickly develop and modify heuristics

The first and most important skill needed for the internet to be a net gain for a persons understanding is the ability to quickly develop and modify heuristics to filter out bad data. Filtering good data is fine, the truth repeats itself in many formulations, but believing bad data or even spending too long noticing it is bad and you are worse off than just using a library and books.