Explanation:

The conservatism principle is the general concept of recognizing expenses and liabilities as soon as possible when there is uncertainty about the outcome, but to only recognize revenues and assets when they are assured of being received.

 Amortizing goodwill is considered conservative because it accounts for the uncertainty of its value by recognizing an expense and reducing asset value over time, rather than waiting for a potential loss. 

Under U.S. Generally Accepted Accounting Principles (GAAP) & International Financial Reporting Standards (IFRS), goodwill is not amortized. 

Instead, it is tested annually for impairment, which can be seen as a form of conservative accounting as it recognizes a loss immediately if it is triggered.