Understanding Steering Behaviors: Seek

SteeringSeek.cs

using UnityEngine;

public class Seek : MonoBehaviour
{
    private Transform pointer;
    public float speed = 1.0f;
    public float mass = 1.0f;

    private Vector2 curVelocity;

    private void Start()
    {
        pointer = FindObjectOfType<Pointer>().transform;
        curVelocity = Vector2.zero;
    }

    private void Update()
    {
        Vector2 desiredVelocity = (pointer.position - transform.position).normalized * speed;
        Vector2 steering = desiredVelocity - curVelocity;
        steering = steering / mass;

        curVelocity += steering;
        transform.Translate(curVelocity * Time.deltaTime    );
    }
}

the script is misnamed or you have a type-o in the class name.
SteeringSeek.cs should have the class named "SteeringSeek" not "Seek"