Perhaps the most characteristic feature of the lectures is the way each new notion is analysed very carefully, its peculiarities examined on "bad spaces", and counter-examples given whenever possible. For example, both fine and locally fine sheaves are defined, and it is shown that they coincide on paracompact normal spaces but not otherwise.
Marahil ang pinaka-tampok na katangian ng lektura ay sa paraan ng bawat bagong kuru-kuro ay analysed tunay mabuti, ang kanyang peculiarities napagmasdan sa "masamang puwang", at counter-halimbawa given hangga't maaari. Halimbawa, parehong multa at sa local fine sheaves ay tinukoy, at ito ay ipinapakita na sila ay nag-tutugma sa paracompact normal na espasyo ngunit hindi sa iba.