What are disadvantage of levelling?

Levelling can be time-consuming and labor-intensive, requiring precise measurements that may slow down project timelines. Additionally, it often demands specialized equipment and trained personnel, leading to increased costs and potential for human error in readings. Environmental factors, such as terrain and weather conditions, can also impact the accuracy and feasibility of levelling tasks. Lastly, it may not adequately account for dynamic changes in the landscape over time, necessitating frequent re-evaluations.