The depiction of High Altitude Pulmonary Edema (HAPE) is grossly inaccurate. HAPE is usually a result of altitude sickness and can most commonly be prevented (or at least have a measure of prevention provided) by slow acclimatization to the higher altitude. It is not a guaranteed condition to every climber at a high altitude. Moreover, the consumption of water has little bearing on the onset of HAPE. Additionally, given Annie's and Tom's high-degree of experience, and previous statements regarding their proposed high level of safety, they would most certainly have insisted on climbing K2 with the aid of oxygen, the use of which also staves off HAPE.
