I would like to see a language use decimal by default. Under the hood, it could use floating point for certain types of calculations where less precision is required. If I want to know the answer to 0.2 + 0.1, chances are I want the answer to be 0.3. If I&#x27;m writing performance-sensitive code, maybe I can drop down a level and opt for float(0.2) + float(0.1). Are any languages doing this currently?