Explain briefly why you think that the calculation of depreciation is based on estimates?

The calculation of depreciation is based on estimates because it involves predicting the useful life and residual value of an asset, both of which can vary significantly based on usage, maintenance, and market conditions. These estimates inherently contain uncertainties, as they rely on judgment and assumptions about future events. Additionally, different accounting methods (e.g., straight-line or declining balance) can yield varying depreciation amounts, further emphasizing the subjective nature of these calculations. Consequently, the estimation process reflects the complexities involved in assessing an asset's value over time.