Lawyers do not always take on cases they know they cannot win. In fact, many lawyers carefully evaluate potential cases to determine whether they have a reasonable chance of success before agreeing to represent a client. There are several reasons why a lawyer may decline to take on a case, even if the potential client believes they have a strong case. For example, the lawyer may determine that the evidence is not strong enough to support the client's claims, or that the legal arguments are not persuasive. Additionally, a lawyer may decline to take on a case if they believe that the potential rewards do not justify the time and resources required to pursue the case. In some cases, a lawyer may decline to take on a case if they believe that the client's goals are unrealistic or if the client is not willing to cooperate with the lawyer's advice.