Also obvious is that "spiritually dead" people are human beings. The "spiritually dead" are not corpses devoid of heartbeat, electrical activity in the brain, and all the other signs of life that a doctor (whether he is Christian or "spiritually dead" himself) uses to check for life.
Ephesians 2:1 You were dead, through faults and sins. 2 Once, you lived according them, according to this world, and followed the sovereign ruler who reigns between heaven and earth, and who goes on working, in those who resist the faith. 3 All of us belonged to them, at one time, and we followed human greed; we obeyed the urges of our human nature and consented to its desires. By ourselves, we went straight to the judgement, like the rest of humankind. 4 But God, who is rich in mercy, revealed his immense love. 5 As we were dead through our sins, he gave us life, with Christ. By grace, you have been saved! 6 And he raised us to life, with Christ, giving us a place with him in heaven. 7 In showing us such kindness, in Christ Jesus, God willed to reveal, and unfold in the coming ages, the extraordinary riches of his grace. 8 By the grace of God, you have been saved, through faith. This has not come from you: it is God’s gift. 9 This was not the result of your works, so you are not to feel proud. 10 What we are, is God’s work. He has created us, in Christ Jesus, for the good works he has prepared, that we should devote ourselves to them.
"Spiritually dead" Ephesians who became Christians and "alive in Christ" were able to live according to this world and follow the ruler of who resist the faith. The passage quoted above doesn't pretend that "spiritually dead" people are incapable of doing anything. What their death signifies is that they are not alive in Christ. Not that they are dead and incapable of thought, action, purpose and so forth.