What you describe is the Euler method, which is well known for being a comparatively bad choice in most situations. The ODE solver can be selected, the default

What you describe is the Euler method, which is well known for being a comparatively bad choice in most situations. The ODE solver can be selected, the default is RK4, which is a Runge–Kutta method of 4th order, it computes the next time step by combining the values at 4 previous time steps.