Reader drawings - castles

 Drawings of a defect-tolerant software / a dragon-tolerant castle (exercise 8.4)

A castle with many towers to easily see dragons, from Poland:


A castle with numerous defences against dragons (very fault-tolerable software) from Poland:


Nooa: a diamond castle can resist an attack from the dragon:


Töölö school student view:

Töölö school student view (rock, high walls of level 13):

Töölö school student view:

Töölö school student view:

Töölö school student view:

Töölö school student view:


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