And the idea is you fast forward and good students start failing algebra all of the sudden, and start failing calculus all of the sudden, despite being smart, despite having good teachers, and it's usually because they have these Swiss cheese gaps that kept building throughout their foundation.
Man skrider for hurtigt frem, dygtige elever dumper pludselig i algebra og begynder at dumpe i regning, til trods for at de er kloge og har dygtige lærere. Som regel har de huller som i en schweizer-ost som kun bliver større. Vores model