Final answer:
The Alamodome can seat up to 35,000 people for special events, using space efficiently and by providing additional seating compared to its regular configuration for Spurs' fans.
Step-by-step explanation:
The Alamodome in San Antonio can seat 35,000 people for special events. The capacity of a venue like the Alamodome depends on its design and how the space is utilized. For instance, by reducing the size of the personal space allocated to each attendee or by installing additional temporary seating, more people can be accommodated compared to regular arrangements. This concept is not new; it harks back to ancient times, as demonstrated by the Roman Colosseum. Ingenious engineering allowed the Romans to build massive amphitheaters with an efficient ticketing system, much like modern stadiums, to manage large crowds. In the case of the Alamodome, the ability to increase its capacity from its normal limit of 20,557 seats for Spurs' fans to a crowd capacity of 35,000 for special events showcases the flexibility of such venues.